CTAN sync 202001170301

57 files changed, 1136 insertions, 419 deletions

diff --git a/macros/latex/contrib/acro/acro-manual.pdf b/macros/latex/contrib/acro/acro-manual.pdf
index 8d5fded23e..8a441d4a1f 100644
--- a/macros/latex/contrib/acro/acro-manual.pdf
+++ b/macros/latex/contrib/acro/acro-manual.pdf
diff --git a/macros/latex/contrib/acro/acro.history b/macros/latex/contrib/acro/acro.history
index d6aa883d6d..21e61394dd 100644
--- a/macros/latex/contrib/acro/acro.history
+++ b/macros/latex/contrib/acro/acro.history
@@ -280,3 +280,4 @@ feel free to contact me.
 		  - rename the manual file and use a dedicated class for the
                     manual
 		  - prefer lazy boolean evaluation when possible
+2020/01/16 v2.11a - adapt to new l3text module
diff --git a/macros/latex/contrib/acro/acro.sty b/macros/latex/contrib/acro/acro.sty
index 98425268c1..0717259d27 100644
--- a/macros/latex/contrib/acro/acro.sty
+++ b/macros/latex/contrib/acro/acro.sty
@@ -35,10 +35,10 @@
 
 \ExplSyntaxOn
 
-\tl_const:Nn \c_acro_date_tl                 {2020/01/11}
+\tl_const:Nn \c_acro_date_tl                 {2020/01/16}
 \tl_const:Nn \c_acro_version_major_number_tl {2}
 \tl_const:Nn \c_acro_version_minor_number_tl {11}
-\tl_const:Nn \c_acro_version_subrelease_tl   {}
+\tl_const:Nn \c_acro_version_subrelease_tl   {a}
 \tl_const:Nx \c_acro_version_number_tl
   {
     \c_acro_version_major_number_tl .
@@ -487,9 +487,8 @@
 \cs_new:Npn \acro_no_break: { \tex_penalty:D 10000 \scan_stop: }
 
 \cs_new_protected:Npn \__acro_first_upper_case:n #1
-  { \tl_upper_case:n { \tl_head:n {#1} } \tl_tail:n {#1} }
+  { \text_titlecase_first:n {#1} }
 \cs_generate_variant:Nn \__acro_first_upper_case:n {x}
-\cs_generate_variant:Nn \tl_mixed_case:n {x}
 
 \cs_new_eq:NN \acro_first_upper_case:n \__acro_first_upper_case:n
 
@@ -702,7 +701,7 @@
       }
   }
 \cs_generate_variant:Nn \acro_first_instance:nn {nV}
-  
+
 % --------------------------------------------------------------------------
 % hyperref support
 \cs_new_eq:NN \acro_hyper_target:nn \use_ii:nn
@@ -1858,7 +1857,7 @@
   {
     \bool_if:NTF \g__acro_case_sensitive_bool
       { \tl_to_str:n {#1} }
-      { \str_lower_case:n {#1} }
+      { \str_lowercase:n {#1} }
   }
 
 \cs_new_protected:Npn \acro_protected_case_insensitive:n #1
diff --git a/macros/latex/contrib/bearwear/README.md b/macros/latex/contrib/bearwear/README.md
new file mode 100644
index 0000000000..fe6ffb7a6e
--- /dev/null
+++ b/macros/latex/contrib/bearwear/README.md
@@ -0,0 +1,32 @@
+# bearwear --- A package for tikz bear fashion
+Packageversion: 0.1 
+Idea: Bär, Implementation: Ulrike Fischer 2020
+Packagedate: 2020-01-15
+
+## LICENSE
+LaTeX Project Public License
+
+## CONTENTS AND INSTALLATION
+
+- README.md (this file)
+- bearwear.dtx  
+- bearwear.ins
+- bearwear.pdf (documentation)
+- tartan3.jpg,baer.png,montblanc.jpg,ulrike.pdf,flag.pdf,latex-project-logo.pdf
+
+The best is to install bearwear with the package manager of your texsystem.
+
+For manual installation compile the .ins file. This will create bearwear.sty and bearwear-doc.tex.
+Move bearwear.sty  in <texmf>/tex/latex/bearwear/ and update the filename
+database. Compile bearwear.dtx to get the documentation 
+ (it will need the extrated bearwear-doc.tex and all the graphics files). 
+
+
+
+## DESCRIPTION
+
+This package offers commands to create shirts for a tikzbear.
+
+## REQUIREMENTS
+It needs a recent version of pgf and tikzlings-bears. 
+
diff --git a/macros/latex/contrib/bearwear/baer.png b/macros/latex/contrib/bearwear/baer.png
new file mode 100644
index 0000000000..6263f06ef0
--- /dev/null
+++ b/macros/latex/contrib/bearwear/baer.png
diff --git a/macros/latex/contrib/bearwear/bearwear.dtx b/macros/latex/contrib/bearwear/bearwear.dtx
new file mode 100644
index 0000000000..497cf44544
--- /dev/null
+++ b/macros/latex/contrib/bearwear/bearwear.dtx
@@ -0,0 +1,511 @@
+% \iffalse meta-comment
+%
+%% File: bearwear.dtx
+%
+% Copyright (C) 2020 Ulrike Fischer / Bär
+%
+% It may be distributed and/or modified under the conditions of the
+% LaTeX Project Public License (LPPL), either version 1.3c of this
+% license or (at your option) any later version.  The latest version
+% of this license is in the file
+%
+%    https://www.latex-project.org/lppl.txt
+%
+% This file is part of the "bearwear bundle" (The Work in LPPL)
+% and all files in that bundle must be distributed together.
+%
+% -----------------------------------------------------------------------
+%
+% The development version of the bundle can be found at
+%
+%    https://github.com/u-fischer/bearwear
+%
+% for those people who are interested.
+%
+%<*driver>
+\documentclass{l3doc}
+\OnlyDescription
+\PassOptionsToPackage{svgnames}{xcolor}
+\usepackage{tikzlings,tikzducks,bearwear}
+\usetikzlibrary{patterns,patterns.meta}
+\usepackage{csquotes,graphicx}
+\usepackage{needspace}
+\usepackage{AlegreyaSans}
+\setmainfont{Heuristica}
+\usepackage[most]{tcolorbox}
+
+\lstdefinestyle{bearwarestyle}{% stolen and adapted from tikzlings
+	language={[latex]TeX},
+	tabsize=2,
+	breaklines,
+	basicstyle=\ttfamily,
+	commentstyle={\color{green!50!black}\slshape},
+	columns=fullflexible,
+	alsodigit={-},
+	alsoletter={3},
+	emphstyle=\color{red!60!black},
+	emph=[1]{
+		v-neckline,muscle, shirt, t-shirt, long, sleeves, round, neckline,
+        leftarm, rightarm,arms,deco,body, pattern,beartummy,
+        bearheart,color},
+	texcsstyle=*\color{SteelBlue!50!black}\bfseries,
+	keywordstyle=\color{red!60!black}\bfseries,
+	morekeywords={tikzpicture},
+	moretexcs={bearwear, bearwearsetup},
+	delim ={[s][\ttfamily\color{green!50!black}]{$}{$}},
+	moredelim=[is][\footnotesize\ttfamily\color{orange!70!black}]{|}{|},
+	index=[1][emph]
+}
+\tcbset{%
+	colframe=SteelBlue!50!black,
+	arc=0mm,
+	fonttitle=\bfseries,
+	sidebyside,
+	listing options={style=bearwarestyle},
+	center lower,
+	righthand width=4cm,
+	bottom=0pt,
+	top=0pt,
+	%tikz lower,
+	height plus=3cm,
+	colback=SteelBlue!30!white,
+    enlarge top initially by=10pt
+}
+\lstset{style=bearwarestyle}
+\tikzset{
+  hippo/.pic = {
+   \begin{scope}[scale=0.2,transform shape]
+     \hippo;
+      \begin{scope}[yshift=0.15cm,xshift=-0.5cm,rotate=8]
+        \duck[invisible,bowtie]
+      \end{scope}
+  \end{scope}},}
+\raggedbottom
+\let\bearwearkey\lstinline
+\newcommand{\TikZ}{Ti\emph{k}Z}
+
+\GetFileInfo{bearwear.sty}
+\title{The \bearwearlogo{} Package%
+       \thanks{This file describes \fileversion,
+        last revised \filedate.}}
+\author{Idea: Bär~~\includegraphics[trim=0pt 15pt 0pt 0pt,height=13pt]{baer}
+        \and Implementation: Ulrike Fischer%
+        \thanks{Issues should be reported at https://github.com/u-fischer/bearwear}
+        ~\includegraphics[trim=0pt 15pt 0pt 0pt,height=15pt]{ulrike}}
+\date{\filedate}
+\begin{document}
+  \DocInput{\jobname.dtx}
+\end{document}
+%</driver>
+% \fi
+% \maketitle
+% {\catcode`\%=14 \input{bearwear-doc}}
+%
+% \StopEventually{}
+%    \begin{macrocode}
+%<@@=bearwear>
+%<*package>
+\RequirePackage{xparse}
+\RequirePackage{tikzlings-bears}
+\ProvidesExplPackage {bearwear} {2020-01-15} {0.1}
+  {A package for tikz bear fashion}
+\ProcessOptions\relax
+% a tikzset style to reverse the clip:
+\tikzset
+  {@@reverseclip/.style=
+    {insert~path=
+      {
+       (current~bounding~box.south~west) --  (current~bounding~box.north~west)
+       --
+       (current~bounding~box.north~east) --  (current~bounding~box.south~east)
+       -- cycle
+      }
+   }
+ }
+
+\definecolor{@@europablue}{RGB}{00,33,99}
+
+\cs_new_protected:Npn \@@_rightarm_path:nn #1 #2 %#1 fill, clip, #2 user
+ {
+  \path[#1,#2,rotate~around={-50\char_generate:nn{58}{12}(0.525,0.9)}]
+    (0.525,0.9) ellipse (0.35~and~0.15);
+ }
+
+\cs_new_protected:Npn \@@_leftarm_path:nn #1 #2 %#1 fill, clip, #2 user
+ {
+   \path[#1,#2,rotate~around={50\char_generate:nn{58}{12}(-0.525,0.9)}]
+     (-0.525,0.9) ellipse (0.35~and~0.15);
+ }
+
+\cs_new_protected:Npn \@@_body_path:nn #1 #2 %#1 fill, clip, #2 user
+ {
+   \path[#1,#2] (0,0.75) ellipse (0.55~and~0.65);
+ }
+
+\cs_new_protected:Npn \@@_init_path:
+  {
+    \@@_rightarm_path:nn {}{}
+    \@@_leftarm_path:nn  {}{}
+    \@@_body_path:nn     {}{}
+  }
+
+\cs_new_protected:Npn \@@_set_coordinates:
+  {
+    \coordinate (beartummy) at (0,0.75);
+    \coordinate (bearheart)  at (0.25,0.9);
+  }
+
+\cs_new_protected:Npn \@@_clipping_path:
+  {
+    \bool_if:NTF  \l__bearwear_v_neckline_bool
+     {
+       \clip  (0, 1.55)     circle (0.5)    [__bearwearreverseclip]; %head
+       \clip  (-0.4, 1.55) -- (0.4, 1.55) -- (0,0.8) --cycle[__bearwearreverseclip];
+        %v-neck
+     }
+      {
+       \clip  (0, 1.55)     circle (0.53)    [__bearwearreverseclip]; %head
+     }
+    \clip  (0.425, 0.3)  circle (0.28)   [@@reverseclip];
+    \clip  (-0.425, 0.3) circle (0.28)   [@@reverseclip];
+    \bool_if:NTF \l_@@_t_shirt_bool
+     {
+       \clip (-1,0.6) --++ (0.45,0)--++(-0.5,5) --cycle[@@reverseclip] ;
+       \clip ( 1,0.6) --++ (-0.45,0)--++(0.5,5) --cycle[@@reverseclip] ;
+     }
+     {
+       \clip (-1,0.6) --++ (0.45,0)--++(-0.5,1) --cycle[@@reverseclip] ;
+       \clip ( 1,0.6) --++ (-0.45,0)--++(0.5,1) --cycle[@@reverseclip] ;
+     }
+    \clip(-1,0.5) rectangle (1,1.2);
+  }
+
+\cs_new_protected:Npn \@@_shirt_color:
+  {
+    \bool_if:NF \l_@@_muscle_shirt_bool
+      {
+        \exp_args:Nno \@@_leftarm_path:nn  {fill}{\l_@@_leftarm_color_tl}
+        \exp_args:Nno \@@_rightarm_path:nn {fill}{\l_@@_rightarm_color_tl}
+      }
+    \exp_args:Nno \@@_body_path:nn     {fill}{\l_@@_body_color_tl}
+  }
+
+\cs_new_protected:Npn \@@_shirt_pattern:
+  {
+    \bool_if:NF \l_@@_muscle_shirt_bool
+      {
+        \exp_args:Nno \@@_leftarm_path:nn  {}{\l_@@_leftarm_pattern_tl}
+        \exp_args:Nno \@@_rightarm_path:nn {}{\l_@@_rightarm_pattern_tl}
+      }
+    \exp_args:Nno \@@_body_path:nn         {}{\l_@@_body_pattern_tl}
+  }
+
+\cs_new_protected:Npn \@@_shirt_deco:
+  {
+    \bool_if:NF \l_@@_muscle_shirt_bool
+      {
+        \exp_args:Nno \@@_leftarm_path:nn  {}{\l_@@_leftarm_deco_tl}
+        \exp_args:Nno \@@_rightarm_path:nn {}{\l_@@_rightarm_deco_tl}
+      }
+    \exp_args:Nno \@@_body_path:nn         {}{\l_@@_body_deco_tl}
+  }
+
+\bool_new:N \l_@@_t_shirt_bool
+\bool_new:N \l_@@_muscle_shirt_bool
+\bool_new:N \l__bearwear_round_neckline_bool
+
+\tl_new:N \l_@@_leftarm_color_tl
+\tl_new:N \l_@@_rightarm_color_tl
+\tl_new:N \l_@@_body_color_tl
+
+\tl_new:N \l_@@_leftarm_pattern_tl
+\tl_new:N \l_@@_rightarm_pattern_tl
+\tl_new:N \l_@@_body_pattern_tl
+\tl_new:N \l_@@_leftarm_deco_tl
+\tl_new:N \l_@@_rightarm_deco_tl
+\tl_new:N \l_@@_body_deco_tl
+
+\keys_define:nn {@@}
+ {
+   ,leftarm  .tl_set:N = \l_@@_leftarm_color_tl
+   ,leftarm  .initial:n = {@@europablue}
+   ,leftarm~pattern   .tl_set:N = \l_@@_leftarm_pattern_tl
+   ,leftarm~deco         .code:n =
+      {\tl_set:Nn \l_@@_leftarm_deco_tl {path~picture = {#1}}}
+   ,rightarm .tl_set:N = \l_@@_rightarm_color_tl
+   ,rightarm .initial:n = {@@europablue}
+   ,rightarm~pattern   .tl_set:N = \l_@@_rightarm_pattern_tl
+   ,rightarm~deco         .code:n =
+      {\tl_set:Nn \l_@@_rightarm_deco_tl {path~picture = {#1}}}
+   ,body     .tl_set:N = \l_@@_body_color_tl
+   ,body     .initial:n = {@@europablue}
+   ,body~pattern   .tl_set:N = \l_@@_body_pattern_tl
+   ,arms     .meta:n   =  {leftarm={#1},rightarm={#1}}
+   ,arms~pattern .meta:n   =  {leftarm~pattern={#1},rightarm~pattern={#1}}
+   ,arms~deco .meta:n   =  {leftarm~deco={#1},rightarm~deco={#1}}
+   ,shirt    .meta:n   =  {body={#1},leftarm={#1},rightarm={#1}}
+   ,shirt~pattern    .meta:n   =
+      {body~pattern={#1},leftarm~pattern={#1},rightarm~pattern={#1}}
+   ,shirt~deco .meta:n   =
+      {body~deco={#1},leftarm~deco={#1},rightarm~deco={#1}}
+   ,long~sleeves .bool_set_inverse:N = \l_@@_t_shirt_bool
+   ,t-shirt    .bool_set:N         = \l_@@_t_shirt_bool
+   ,muscle~shirt .bool_set:N       = \l_@@_muscle_shirt_bool
+   ,body~deco         .code:n =
+      {\tl_set:Nn \l_@@_body_deco_tl {path~picture = {#1}}}
+   ,round~neckline .bool_set_inverse:N       = \l__bearwear_v_neckline_bool
+   ,v-neckline .bool_set:N   = \l__bearwear_v_neckline_bool
+ }
+
+\NewDocumentCommand\bearwearsetup { m }
+ {
+    \keys_set:nn { @@ } {#1}
+ }
+\NewDocumentCommand\bearwear { O {} }
+  {
+    \begin{scope}[even~odd~rule]
+     % handle keys
+     \keys_set:nn { @@ } {#1}
+     \@@_init_path:
+     \@@_set_coordinates:
+     \@@_clipping_path:
+     \@@_shirt_color:
+     \@@_shirt_pattern:
+     \@@_shirt_deco:
+    \end{scope}
+  }
+
+\NewDocumentCommand\bearwearlogo {} {{
+  \normalfont\fontencoding{T1}\fontfamily{AlegreyaSans-LF}\selectfont
+   BearWear
+   \raisebox{0.8ex}[0pt][0pt]{
+     %\textcircled{
+       \begin{tikzpicture}[baseline={(0,0.03)},scale=\fp_eval:n{\f@size/100}]
+           \bear;
+           \bearwear[body~deco={\node[text=white] at (beartummy)
+              {\fontsize{\fp_eval:n{\f@size/20}pt}{\fp_eval:n{\f@size/20}pt}
+                \sffamily
+                BearWear};}]
+       \end{tikzpicture}}}}%}
+%</package>
+%    \end{macrocode}
+%<*docu>
+\section{Basic Usage}
+
+ The package is based on \TikZ{} and the main command should be used in a \texttt{tikzpicture} or -- as shown in some of the examples -- with \verb+\tikz+.
+
+ \subsection{The shirts}
+ The package provides a number of shirts for the bear, \bearwearkey{long sleeves} and \bearwearkey{round neckline} are the defaults:
+ \begin{tcblisting}{righthand width=6cm}
+ \tikz\bearwear % default
+    [long sleeves,
+     round neckline];
+ \tikz\bearwear
+   [t-shirt];
+ \tikz\bearwear
+   [muscle shirt];
+
+ \tikz\bearwear
+   [v-neckline];
+ \tikz\bearwear
+   [t-shirt,v-neckline];
+ \tikz\bearwear
+   [muscle shirt,v-neckline];
+  \end{tcblisting}
+
+ \subsection{Dressing the bear}
+
+ To dress the bear with the shirt, simply add the \verb+\bear+ command from the \bearwearkey{tikzlings-bears} package.
+
+ \begin{tcblisting}{before=\parindent0pt\nopagebreak}
+ \tikz{\bear;\bearwear[v-neckline];}
+ \tikz{\bear;\bearwear[muscle shirt];}
+  \end{tcblisting}
+
+ \subsection{Coloring the shirts}
+
+ The body and the arms of the shirts can be colored. They are three basic keys: \bearwearkey{leftarm}, \bearwearkey{rightarm} and \bearwearkey{body}, and two meta keys: \bearwearkey{arms} and \bearwearkey{shirt}.
+ Basically every option that would make sense in a \lstinline|\fill|  is allowed here.
+ Patterns e.g. would work too.
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear
+    [v-neckline,
+     leftarm=red,
+     rightarm=green,
+     body=blue];
+ \end{tcblisting}
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear[arms=green];
+ \end{tcblisting}
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear
+    [shirt=
+      {shade,
+       top color=blue,
+       bottom color=red}];
+ \end{tcblisting}
+
+
+
+ \begin{tcblisting}{tikz lower,before=\parindent0pt\nopagebreak}
+   \bear;
+   \bearwear
+     [v-neckline,
+      shirt  =
+        {pattern=
+          horizontal lines light blue}];
+ \end{tcblisting}
+
+ \subsection{Additional patterns}
+
+ As seen in the last example patterns can be added instead of colors, but sometimes it makes sense to
+ add them on top to preserve a background color. For this the package provides special \texttt{pattern} keys:\\
+ \bearwearkey{leftarm pattern}, \bearwearkey{rightarm pattern}, \bearwearkey{arms pattern},
+ \bearwearkey{body pattern}, \bearwearkey{shirt pattern},
+
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear
+     [v-neckline,
+      shirt=red,
+      body pattern =
+       {pattern=
+         {Stars[points=6,
+          radius=0.5mm,distance=1.5mm]},
+        pattern color=yellow}];
+ \end{tcblisting}
+
+ \subsection{Decorations}
+
+ The \lstinline|deco| keys add their value to a \texttt{path picture} key. This can be used to place emblems or use graphics as pattern. To help with the placement two coordinates are
+ predefined: \bearwearkey{bearheart} and \bearwearkey{beartummy}.
+
+ \begin{tcblisting}{tikz lower}
+   \bear;
+   \bearwear[shirt deco =
+    {\fill[red] (beartummy) circle (1pt);
+     \fill[red] (bearheart) circle (1pt);}
+     ]
+ \end{tcblisting}
+
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear[shirt deco =
+    {\node at (beartummy)
+     {\includegraphics[width=5cm]
+       {tartan3}};}]
+ \end{tcblisting}
+
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear[body deco=
+    {\node at ([yshift=-1mm]bearheart)
+      {\includegraphics[width=0.3cm]
+        {flag}};}];
+ \end{tcblisting}
+
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear[
+     shirt=Beige!80!black,
+     body deco=
+      {\node at ([yshift=-1mm]bearheart)
+       {\includegraphics[width=0.5cm]
+         {latex-project-logo}};}];
+ \end{tcblisting}
+
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear[
+     shirt=HotPink,
+     body deco=
+      {\path  (bearheart)--++(0,-3mm)
+        pic{hippo};}];
+ \end{tcblisting}
+
+ \begin{tcblisting}{tikz lower}
+  \bear;
+  \bearwear[
+    arms= DeepSkyBlue,
+    body deco =
+     {\node at ([yshift=-2mm]beartummy)
+       {\includegraphics[width=4cm]
+         {montblanc}};
+      \node[text=white,
+           font=\tiny\sffamily]
+        at ([yshift=1.95mm]beartummy)
+        {{Mont Blanc}};
+     }]
+ \end{tcblisting}
+
+ \subsection{Scaling}
+
+ Scaling works as expected, but don't forget that nodes in \TikZ{} normally don't scale if you don't use the \lstinline|transform shape| key:
+
+ \begin{tcblisting}{tikz lower,before=\parindent0pt\nopagebreak,}
+  \begin{scope}[scale=1.5]
+  \bear;
+  \bearwear[
+    arms= DeepSkyBlue,
+    body deco =
+     {\node at ([yshift=-2mm]beartummy)
+       {\includegraphics[width=4cm]
+         {montblanc}};
+      \node[text=white,
+           font=\tiny\sffamily]
+        at ([yshift=2mm]beartummy)
+        {{Mont Blanc}};
+     }]
+   \end{scope}
+ \end{tcblisting}
+
+ \subsection{Setting up defaults}
+
+ With \lstinline|\bearwearsetup| you can change the defaults:
+
+ \begin{tcblisting}{}
+ \bearwearsetup
+   {body=green!50!black,arms=green}
+ \tikz{\bear;\bearwear;}
+ \tikz{\bear;\bearwear;}
+ \end{tcblisting}
+ \section{The brains behind \texorpdfstring{\bearwearlogo{}}{BearWear}}
+ \includegraphics[width=3cm]{baer}
+ \begin{description}
+ \item[Ulrike]
+  Bär, your decision to create \bearwearlogo{} has come as a surprise to many. Did you expect this?
+  \item[Bär] Quite true, Ulrike. I am better known as an outdoor type
+  and the fashionistas didn't reckon with me at all.
+ \item[Ulrike] So, why did you take this step?
+ \item[Bär] There were quite a few reasons -- most importantly
+ my deeply felt desire to bring more justice to the world.
+ Look at the wonderful world of \TikZ ducks fashion, and even Marmots have come
+ far in the area of refinement. Why should \TikZ bears be left behind?
+ \item[Ulrike] You are also concerned with the more momentous issues of our day.
+ \item[Bär] Correct! My fashion line is the first ever to have practically
+ no negative influence on our environment. Manufacture and transportation
+ are ecologically neutral. In fact it's the first time in the
+ history of world economy that goods are produced without
+ the use of raw materials.
+ \item[Ulrike] You claim that \bearwearlogo{} will have a global impact.
+ \item[Bär] Yes, the issue of globalization is one which has been interesting
+  me for a long time. \bearwearlogo{} caters for the needs of \TikZ bears all
+  over the world. There is the Longshirt Line for those who live near the poles,
+  t-shirts for those in temperate regions and even a Muscle Shirt Line for the
+  bears of Australia.
+ \item[Ulrike] How about individuality?
+ \item[Bär] I am particularly proud that \bearwearlogo{} enables every single
+ bear to create his own personal shirt -- free of the dictates of the modern
+ Brummells. He may use my suggestions but he need not do so.
+ \item[Ulrike] Will you be seen wearing your own creations?
+ \item[Bär] Well Ulrike, I am afraid this is not very likely.
+ I have got this most beautiful fur and I'd hate to  cover it with artifical
+ patterns -- no matter how ravishing.
+ \item[Ulrike] One last question: what impulse got you moving towards
+ \bearwearlogo{}?
+ \item[Bär] The death of Karl Lagerfeld. Someone had to fill the void.
+ \end{description}
+ %</docu>
diff --git a/macros/latex/contrib/bearwear/bearwear.ins b/macros/latex/contrib/bearwear/bearwear.ins
new file mode 100644
index 0000000000..7e112c554d
--- /dev/null
+++ b/macros/latex/contrib/bearwear/bearwear.ins
@@ -0,0 +1,70 @@
+\iffalse meta-comment
+
+File: bearwear.ins
+
+Copyright (C) 2020 Ulrike Fischer / Bär
+
+It may be distributed and/or modified under the conditions of the
+LaTeX Project Public License (LPPL), either version 1.3c of this
+license or (at your option) any later version.  The latest version
+of this license is in the file
+
+   https://www.latex-project.org/lppl.txt
+
+This file is part of the "bearwear bundle" (The Work in LPPL)
+and all files in that bundle must be distributed together.
+
+The released version of this bundle is available from CTAN.
+
+-----------------------------------------------------------------------
+
+The development version of the bundle can be found at
+
+   https://github.com/u-fischer/bearwear
+
+for those people who are interested.
+
+-----------------------------------------------------------------------
+
+\fi
+
+\input l3docstrip.tex
+\askforoverwritefalse
+
+\let\MetaPrefix\relax
+\preamble
+
+Copyright (C) 2020 Ulrike Fischer / Bär
+
+It may be distributed and/or modified under the conditions of
+the LaTeX Project Public License (LPPL), either version 1.3c of
+this license or (at your option) any later version.  The latest
+version of this license is in the file:
+
+   https://www.latex-project.org/lppl.txt
+
+This file is part of the "bearwear bundle" (The Work in LPPL)
+and all files in that bundle must be distributed together.
+
+\endpreamble
+\let\MetaPrefix\DoubleperCent
+% stop docstrip adding \endinput
+\postamble
+\endpostamble
+
+\keepsilent
+
+\generate
+  {%
+    \file{bearwear.sty}
+      {%
+        \from{bearwear.dtx}{package}
+      }%
+       \file{bearwear-doc.tex}
+      {%
+        \from{bearwear.dtx}{docu}
+      }%
+  }
+
+
+\endbatchfile
diff --git a/macros/latex/contrib/bearwear/bearwear.pdf b/macros/latex/contrib/bearwear/bearwear.pdf
new file mode 100644
index 0000000000..6eb455f091
--- /dev/null
+++ b/macros/latex/contrib/bearwear/bearwear.pdf
diff --git a/macros/latex/contrib/bearwear/flag.pdf b/macros/latex/contrib/bearwear/flag.pdf
new file mode 100644
index 0000000000..065d422ca3
--- /dev/null
+++ b/macros/latex/contrib/bearwear/flag.pdf
diff --git a/macros/latex/contrib/bearwear/latex-project-logo.pdf b/macros/latex/contrib/bearwear/latex-project-logo.pdf
new file mode 100644
index 0000000000..bf32d25ef5
--- /dev/null
+++ b/macros/latex/contrib/bearwear/latex-project-logo.pdf
diff --git a/macros/latex/contrib/bearwear/montblanc.jpg b/macros/latex/contrib/bearwear/montblanc.jpg
new file mode 100644
index 0000000000..f605535797
--- /dev/null
+++ b/macros/latex/contrib/bearwear/montblanc.jpg
diff --git a/macros/latex/contrib/bearwear/tartan3.jpg b/macros/latex/contrib/bearwear/tartan3.jpg
new file mode 100644
index 0000000000..21cbbd68cb
--- /dev/null
+++ b/macros/latex/contrib/bearwear/tartan3.jpg
diff --git a/macros/latex/contrib/bearwear/ulrike.pdf b/macros/latex/contrib/bearwear/ulrike.pdf
new file mode 100644
index 0000000000..5cd08517f7
--- /dev/null
+++ b/macros/latex/contrib/bearwear/ulrike.pdf
diff --git a/macros/latex/contrib/biblatex-contrib/biblatex-bath/README.md b/macros/latex/contrib/biblatex-contrib/biblatex-bath/README.md
index 82ef9ef2a0..7caac7451c 100644
--- a/macros/latex/contrib/biblatex-contrib/biblatex-bath/README.md
+++ b/macros/latex/contrib/biblatex-contrib/biblatex-bath/README.md
@@ -96,7 +96,7 @@ documentation.
 
 ## Licence
 
-Copyright 2016-2019 University of Bath.
+Copyright 2016-2020 University of Bath.
 
 This work consists of the documented LaTeX file biblatex-bath.dtx and a Makefile.
 
diff --git a/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.dtx b/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.dtx
index bca43bc895..f5592d4c3b 100644
--- a/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.dtx
+++ b/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.dtx
@@ -1,7 +1,33 @@
 % \iffalse meta-comment
+%<*internal|bbx|cbx|dbx|lbx|lbx-gb>
+\def\Version{2020/01/16 v3.2}
+%</internal|bbx|cbx|dbx|lbx|lbx-gb>
 %<*internal>
 \iffalse
 %</internal>
+%<*bbx|cbx|dbx|lbx|lbx-gb>
+\NeedsTeXFormat{LaTeX2e}[1999/12/01]
+%</bbx|cbx|dbx|lbx|lbx-gb>
+%<*bbx>
+\ProvidesFile{bath.bbx}
+    [\Version\space Biblography style as recommended by the University of Bath Library]
+%</bbx>
+%<*cbx>
+\ProvidesFile{bath.cbx}
+    [\Version\space Citation style as recommended by the University of Bath Library]
+%</cbx>
+%<*dbx>
+\ProvidesFile{bath.dbx}
+    [\Version\space Data model required by the biblatex-bath style]
+%</dbx>
+%<*lbx>
+\ProvidesFile{english-bath.lbx}
+    [\Version\space Generic English conventions required by the biblatex-bath style]
+%</lbx>
+%<*lbx-gb>
+\ProvidesFile{british-bath.lbx}
+    [\Version\space British English conventions required by the biblatex-bath style]
+%</lbx-gb>
 %<*readme>
 # biblatex-bath: Harvard referencing style as recommended by the University of Bath Library
 %</readme>
@@ -37,7 +63,7 @@ See:     http://www.latex-project.org/lppl.txt
 \endpreamble
 \postamble
 
-Copyright (C) 2019 by University of Bath
+Copyright (C) 2020 by University of Bath
 \endpostamble
 
 \usedir{tex/latex/\jobname}
@@ -63,7 +89,7 @@ Copyright (C) 2019 by University of Bath
 %</internal>
 %<*driver>
 \ProvidesFile{biblatex-bath.dtx}
-    [2019/08/29 v3.1 Harvard referencing style as recommended by the University of Bath Library]
+    [\Version\space Harvard referencing style as recommended by the University of Bath Library]
 
 \documentclass[10pt,a4paper]{article}
 \usepackage[british]{babel}
@@ -397,7 +423,7 @@ documentation.
 
 \section{Using the style}
 
-This style has been tested with \textsf{biblatex} versions 3.7 and 3.13.
+This style has been tested with \textsf{biblatex} versions 3.12 and 3.14.
 
 To use the style, specify it when you load \textsf{biblatex}. To get the sorting
 order of your \emph{citations} right, specify the \texttt{ynt} sorting scheme.
@@ -1414,13 +1440,13 @@ Use the \texttt{journal} field to specify the mailing list. If you omit the
 \begin{Verbatim}
 %</driver>
 %<*driver|bib>
-@online{bvd2008bt,
+@dataset{bvd2008bt,
   author = {{Bureau van Dijk}},
   year = {2008},
   title = {{BT} {Group} PLC Company Report},
   library = {FAME},
   address = {London},
-  organization = {Bureau van Dijk},
+  publisher = {Bureau van Dijk},
   url = {http://www.portal.euromonitor.com},
   urldate = {2014-11-06}}
 %</driver|bib>
@@ -1442,13 +1468,13 @@ and the \texttt{library} field for the name of the database itself.
 \begin{Verbatim}
 %</driver>
 %<*driver|bib>
-@online{wilson2013rgc,
+@dataset{wilson2013rgc,
   author = {Wilson, D.},
   year = {2013},
   title = {Real Geometry and Connectedness via Triangular Description},
   subtitle = {{CAD} Example Bank},
   address = {Bath},
-  organization = {University of Bath},
+  publisher = {University of Bath},
   doi = {10.15125/BATH-00069},
   urldate = {2016-04-20}}
 %</driver|bib>
@@ -1456,10 +1482,6 @@ and the \texttt{library} field for the name of the database itself.
 \end{Verbatim}
 \end{bibexbox}
 
-\begin{tips}\item
-You can also use \texttt{dataset} as an alias for \texttt{online}.
-\end{tips}
-
 
 \subsubsection*{Computer program}
 
@@ -1997,7 +2019,7 @@ Commission case number, \texttt{number} for the formal decision number, and give
 %<readme>## Licence
 %<readme>
 %<*driver|readme>
-Copyright 2016-2019 University of Bath.
+Copyright 2016-2020 University of Bath.
 
 This work consists of the documented LaTeX file biblatex-bath.dtx and a Makefile.
 
@@ -2054,7 +2076,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 % \section{Implementation: bibliography style}
 %
-% \setcounter{lstnumber}{16}
+% \setcounter{lstnumber}{20}
 %
 % \subsection{Preliminaries}
 %
@@ -2113,8 +2135,8 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 \renewcommand*{\bibfont}{\normalfont\normalsize}
 %    \end{macrocode}
 %
-% To maintain compatibility with \textsf{biblatex} 3.7 (used on Overleaf at the
-% time of writing) we backport some newer features.
+% To maintain compatibility with older versions of \textsf{biblatex},
+% we backport some newer features if necessary.
 %
 %    \begin{macrocode}
 \ifcsdef{letbibmacro}{}{%
@@ -2399,6 +2421,8 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 \newtoggle{bbx:onlineshown}
 \newbibmacro*{isonline}{%
   \ifboolexpr{(
+      test {\iffieldundef{doi}}
+      and
       test {\iffieldundef{url}}
       and
       not test {\ifentrytype{online}}
@@ -2432,35 +2456,47 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 %    \begin{macrocode}
 \renewbibmacro*{title}{%
-  \printtext{%
+  \ifboolexpr{
+    test {\iffieldundef{title}}
+    and
+    test {\iffieldundef{subtitle}}
+  }{}{%
+    \printtext[title]{%
+      \printfield[sentencecase]{title}%
+      \setunit{\subtitlepunct}%
+      \printfield[midsentencecase]{subtitle}%
+      \setunit{\addspace}%
+    }%
+    \printfield{version}%
+    \clearfield{version}%
+    \setunit*{\addspace}%
+    \printfield{titleaddon}%
     \ifboolexpr{
-      test {\iffieldundef{title}}
+      test {\iffieldundef{journaltitle}}
       and
-      test {\iffieldundef{subtitle}}
-    }{}{%
-      \printtext[title]{%
-        \printfield[sentencecase]{title}%
-        \setunit{\subtitlepunct}%
-        \printfield[midsentencecase]{subtitle}%
-        \setunit{\addspace}%
-      }%
-      \printfield{version}%
-      \clearfield{version}%
+      test {\iffieldundef{booktitle}}
+      and
+      test {\iffieldundef{library}}
+      and
+      not test {\ifentrytype{software}}
+      and (
+        test {\iffieldundef{type}}
+        or
+        test {\nottoggle{bbx:labelistitle}}
+        or
+        not (
+          test {\ifentrytype{audio}}
+          or
+          test {\ifentrytype{video}}
+          or
+          test {\ifentrytype{music}}
+          or
+          test {\ifentrytype{movie}}
+      ))
+    }{%
       \setunit*{\addspace}%
-      \printfield{titleaddon}%
-      \ifboolexpr{
-        test {\iffieldundef{journaltitle}}
-        and
-        test {\iffieldundef{booktitle}}
-        and
-        test {\iffieldundef{library}}
-        and
-        not test {\ifentrytype{software}}
-      }{%
-        \setunit*{\addspace}%
-        \usebibmacro{isonline}%
-      }{}%
-    }%
+      \usebibmacro{isonline}%
+    }{}%
   }%
 }
 
@@ -2555,6 +2591,18 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
         test {\ifentrytype{image}}
       ) and
       not test {\ifentrytype{software}}
+      and (
+        test {\iffieldundef{type}}
+        or
+        not (
+          test {\ifentrytype{audio}}
+          or
+          test {\ifentrytype{video}}
+          or
+          test {\ifentrytype{music}}
+          or
+          test {\ifentrytype{movie}}
+      ))
     }{%
       \setunit*{\addspace}%
       \usebibmacro{isonline}%
@@ -2620,7 +2668,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 %    \begin{macrocode}
 \DeclareDelimFormat{nameyeardelim}{\addcomma\space}
-\DeclareDelimFormat*[parencite,bib,biblist]{nameyeardelim}{\addcomma\space}
+\DeclareDelimFormat[parencite,bib,biblist]{nameyeardelim}{\addcomma\space}
 \newcommand{\dononameyeardelim}{%
   \ifentrytype{legislation}{%
     \addspace
@@ -2671,7 +2719,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
     ) and
     togl {bbx:labelistitle}
   }{\addspace}{\addcomma\space}}
-\DeclareDelimFormat*[bib,biblist]{nametitledelim}{%
+\DeclareDelimFormat[bib,biblist]{nametitledelim}{%
   \ifboolexpr{
     (
       test {\ifentrytype{jurisdiction}}
@@ -2807,7 +2855,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 }{}{\wlog{WARNING: biblatex-bath failed to patch bbx@opt@mergedate@false}}
 %    \end{macrocode}
 %
-% If biblatex 3.7 is used, we update the logic for
+% If an older version of biblatex is used, we update the logic for
 % |\bbx@opt@mergedate@maximum|, which is used by the |letter| driver.
 %
 %    \begin{macrocode}
@@ -3009,7 +3057,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 % Versions are printed with `v.\@' in parentheses.
 %
 %    \begin{macrocode}
-\DeclareFieldFormat{version}{\mkbibparens{\bibstring{version}#1}}
+\DeclareFieldFormat{version}{\mkbibparens{\biblcsstring{version}#1}}
 %    \end{macrocode}
 %
 % \subsection{Types}
@@ -3106,6 +3154,12 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
   \iftoggle{bbx:url}
     {\usebibmacro{url+urldate}}
     {}}
+\xpatchbibdriver{online}{%
+  \iftoggle{bbx:doi}
+    {\printfield{doi}}
+    {}%
+}{}{}{\wlog{WARNING: biblatex-bath failed to remove extra DOI from online driver}}
+
 \renewbibmacro*{url}{%
   \iffieldundef{doi}%
     {\printfield{url}}%
@@ -3273,6 +3327,24 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 
 %    \end{macrocode}
 %
+% \subsection{Datasets}
+%
+% We patch the new datasets driver from biblatex v3.13 so it can emulate what
+% we had previously done with the online driver.
+%
+%    \begin{macrocode}
+\xpatchbibdriver{dataset}{%
+  \printlist{organization}%
+  \newunit
+  \usebibmacro{publisher+location+date}%
+}{%
+  \usebibmacro{library}%
+  \newunit\newblock
+  \usebibmacro{organization+location+date}%
+}{}{\wlog{WARNING: biblatex-bath failed to patch dataset driver}}
+
+%    \end{macrocode}
+%
 % \subsection{Online works}
 %
 % Compared with the standard styles, the main difference is that the
@@ -3281,6 +3353,8 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %    \begin{macrocode}
 \xpatchbibdriver{online}{%
   \printlist{organization}%
+  \newunit\newblock
+  \usebibmacro{date}%
 }{%
   \usebibmacro{library}%
   \newunit\newblock
@@ -3440,6 +3514,15 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 % The \texttt{audio} and \texttt{video} drivers are based on \texttt{misc}.
 %
 %    \begin{macrocode}
+\newbibmacro*{type+online}{%
+  \printfield{type}%
+  \ifboolexpr{
+    test {\iffieldundef{type}}
+    or
+    test {\nottoggle{bbx:labelistitle}}
+  }{}{%
+    \setunit{\addspace}%
+    \usebibmacro{isonline}}}
 \DeclareBibliographyDriver{audio}{%
   \usebibmacro{bibindex}%
   \usebibmacro{begentry}%
@@ -3449,7 +3532,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
   \newunit
   \printlist{language}%
   \newunit\newblock
-  \printfield{type}%
+  \usebibmacro{type+online}%
   \newunit\newblock
   \usebibmacro{byauthor}[given-family:full]%
   \newunit\newblock
@@ -4022,7 +4105,6 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 %    \begin{macrocode}
 \DeclareBibliographyAlias{standard}{manual}
-\DeclareBibliographyAlias{dataset}{online}
 %    \end{macrocode}
 %
 % \iffalse
@@ -4032,7 +4114,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 % \section{Implementation: data model}
 %
-% \setcounter{lstnumber}{16}
+% \setcounter{lstnumber}{20}
 %
 %    \begin{macrocode}
 \DeclareDatamodelConstant[type=list]{nameparts}{prefix,family,suffix,given,cjk}
@@ -4044,7 +4126,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 % \section{Implementation: General English language localization}
 %
-% \setcounter{lstnumber}{16}
+% \setcounter{lstnumber}{20}
 %
 % The strings are mostly the same except for the following changes. Note that
 % month names are never abbreviated.
@@ -4107,7 +4189,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 % \section{Implementation: British English language localization}
 %
-% \setcounter{lstnumber}{16}
+% \setcounter{lstnumber}{20}
 %
 % We use the standard version with a few changes. We display the day as a
 % cardinal number instead of an ordinal. The date is separated from the time
@@ -4144,7 +4226,7 @@ This work is `maintained' (as per LPPL maintenance status) by [Alex Ball][me].
 %
 % \section{Implementation: citation style}
 %
-% \setcounter{lstnumber}{16}
+% \setcounter{lstnumber}{20}
 %
 % The standard |authoryear-comp| style is a close match for what we need.
 %
diff --git a/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.pdf b/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.pdf
index 1a4d4254ee..a61f4a509f 100644
--- a/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.pdf
+++ b/macros/latex/contrib/biblatex-contrib/biblatex-bath/biblatex-bath.pdf
diff --git a/macros/latex/contrib/chemgreek/README b/macros/latex/contrib/chemgreek/README
index 060b465f2d..8143e8020c 100644
--- a/macros/latex/contrib/chemgreek/README
+++ b/macros/latex/contrib/chemgreek/README
@@ -1,5 +1,5 @@
 --------------------------------------------------------------------------
-the CHEMGREEK package v1.1 2016/12/20
+the CHEMGREEK package v1.1a 2020/01/16
 
   typeset chemical compounds and reactions
 
@@ -8,7 +8,7 @@ Clemens Niederberger
 Web:    http://www.mychemistry.eu/forums/forum/chemgreek/
 E-Mail: contact@mychemistry.eu
 --------------------------------------------------------------------------
-Copyright 2011-2016 Clemens Niederberger
+Copyright 2015--2020 Clemens Niederberger
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/chemgreek/chemgreek.sty b/macros/latex/contrib/chemgreek/chemgreek.sty
index 3d1d8601b2..29db1a5faf 100644
--- a/macros/latex/contrib/chemgreek/chemgreek.sty
+++ b/macros/latex/contrib/chemgreek/chemgreek.sty
@@ -6,13 +6,13 @@
 % --------------------------------------------------------------------------
 % Clemens Niederberger
 % --------------------------------------------------------------------------
-% https://github.org/cgnieder/chemgreek/
+% https://github.com/cgnieder/chemgreek/
 % contact@mychemistry.eu
 % --------------------------------------------------------------------------
 % If you have any ideas, questions, suggestions or bugs to report, please
 % feel free to contact me.
 % --------------------------------------------------------------------------
-% Copyright 2011-2016 Clemens Niederberger
+% Copyright 2015--2020 Clemens Niederberger
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -28,9 +28,10 @@
 % --------------------------------------------------------------------------
 \RequirePackage{expl3,xparse,amstext}
 \ExplSyntaxOn
-\tl_const:Nn \c_chemgreek_date_tl {2016/12/20}
-\tl_const:Nn \c_chemgreek_version_tl {1.1}
-\tl_const:Nn \c_chemgreek_info_tl {interface for upright greek letters for use in chemistry}
+\tl_const:Nn \c_chemgreek_date_tl {2020/01/16}
+\tl_const:Nn \c_chemgreek_version_tl {1.1a}
+\tl_const:Nn \c_chemgreek_info_tl
+  {interface~ for~ upright~ Greek~ letters~ for~ use~ in~ chemistry}
 
 \ProvidesExplPackage{chemgreek}
   {\c_chemgreek_date_tl}
@@ -186,13 +187,16 @@
 \cs_generate_variant:Nn \msg_warning:nnnn      { nnnV }
 \cs_generate_variant:Nn \quark_if_no_value:nTF { V }
 
+\tl_new:N \l__chemgreek_lower_tl
+\tl_new:N \l__chemgreek_upper_tl
+
 % ----------------------------------------------------------------------------
 % helper function to retrieve upper- and lowercase entries while the mapping
 % happens:
-\cs_new_protected:Npn \__chemgreek_get_upper_lower:w #1 / #2 \q_stop
+\cs_new_protected:Npn \__chemgreek_get_upper_lower:ww #1 / #2 \q_stop
   {
-    \tl_set:Nn \l__chemgreek_tmpa_tl {#1}
-    \tl_set:Nn \l__chemgreek_tmpb_tl {#2}
+    \tl_set:Nn \l__chemgreek_lower_tl {#1}
+    \tl_set:Nn \l__chemgreek_upper_tl {#2}
   }
 
 % ----------------------------------------------------------------------------
@@ -270,13 +274,13 @@
     \clist_map_inline:nn {#2}
       {
         \int_incr:N \l__chemgreek_tmpa_int
-        \__chemgreek_get_upper_lower:w ##1 \q_stop
+        \__chemgreek_get_upper_lower:ww ##1 \q_stop
         \prop_put:cxV { l__chemgreek_lowercase_mapping_#1_prop }
           { \tl_item:Nn \c__chemgreek_alphabet_tl { \l__chemgreek_tmpa_int } }
-          \l__chemgreek_tmpa_tl
+          \l__chemgreek_lower_tl
         \prop_put:cxV { l__chemgreek_uppercase_mapping_#1_prop }
           { \tl_item:Nn \c__chemgreek_alphabet_tl { \l__chemgreek_tmpa_int } }
-          \l__chemgreek_tmpb_tl
+          \l__chemgreek_upper_tl
       }
   }
 
@@ -429,27 +433,27 @@
         \cs_set_protected:cpx
           {
             chem
-            \str_upper_case:f { \tl_head:n {##1} }
-            \str_lower_case:f { \tl_tail:n {##1} }
+            \str_uppercase:f { \tl_head:n {##1} }
+            \str_lowercase:f { \tl_tail:n {##1} }
           }
           { \prop_item:cn { l__chemgreek_uppercase_mapping_#1_prop } {##1} }
         \cs_set_eq:cc
           {
             chemgreek_
-            \str_upper_case:f { \tl_head:n {##1} }
-            \str_lower_case:f { \tl_tail:n {##1} }
+            \str_uppercase:f { \tl_head:n {##1} }
+            \str_lowercase:f { \tl_tail:n {##1} }
             :
           }
           {
             chem
-            \str_upper_case:f { \tl_head:n {##1} }
-            \str_lower_case:f { \tl_tail:n {##1} }
+            \str_uppercase:f { \tl_head:n {##1} }
+            \str_lowercase:f { \tl_tail:n {##1} }
           }
-        \cs_set_protected:cpx { chem \str_lower_case:f {##1} }
+        \cs_set_protected:cpx { chem \str_lowercase:f {##1} }
           { \prop_item:cn { l__chemgreek_lowercase_mapping_#1_prop } {##1} }
         \cs_set_eq:cc
-          { chemgreek_ \str_lower_case:f {##1} : }
-          { chem \str_lower_case:f {##1} }
+          { chemgreek_ \str_lowercase:f {##1} : }
+          { chem \str_lowercase:f {##1} }
       }
     \msg_info:nnn {chemgreek} {mapping-activated} {#1}
   }
@@ -460,12 +464,12 @@
   {
     \tl_set:Nx \l__chemgreek_tmpa_tl
       {
-        \str_upper_case:f { \tl_head:n {#2} }
-        \str_lower_case:f { \tl_tail:n {#2} }
+        \str_uppercase:f { \tl_head:n {#2} }
+        \str_lowercase:f { \tl_tail:n {#2} }
       }
     \str_if_eq:nVTF {#2} \l__chemgreek_tmpa_tl
       {
-        \tl_set:Nx \l__chemgreek_tmpa_tl { \str_lower_case:f {#2} }
+        \tl_set:Nx \l__chemgreek_tmpa_tl { \str_lowercase:f {#2} }
         \prop_item:cV
           { l__chemgreek_uppercase_mapping_#1_prop }
           \l__chemgreek_tmpa_tl
@@ -523,14 +527,14 @@
         \iow_log:x
           {
             . \c_space_tl \c_space_tl \c_space_tl \c_space_tl \c_space_tl
-            \str_lower_case:f {##1} ~ => ~
+            \str_lowercase:f {##1} ~ => ~
             \prop_item:cn { l__chemgreek_lowercase_mapping_#1_prop } {##1}
           }
         \iow_log:x
           {
             . \c_space_tl \c_space_tl \c_space_tl \c_space_tl \c_space_tl
-            \str_upper_case:f { \tl_head:n {##1} }
-            \str_lower_case:f { \tl_tail:n {##1} }
+            \str_uppercase:f { \tl_head:n {##1} }
+            \str_lowercase:f { \tl_tail:n {##1} }
             \c_space_tl => ~
             \prop_item:cn { l__chemgreek_uppercase_mapping_#1_prop } {##1}
           }
@@ -544,12 +548,12 @@
   {
     \tl_map_inline:Nn \c__chemgreek_alphabet_tl
       {
-        \use:c { chem \str_lower_case:f {##1} }
+        \use:c { chem \str_lowercase:f {##1} }
         \use:c
           {
             chem
-            \str_upper_case:f { \tl_head:n {##1} }
-            \str_lower_case:f { \tl_tail:n {##1} }
+            \str_uppercase:f { \tl_head:n {##1} }
+            \str_lowercase:f { \tl_tail:n {##1} }
           }
         \c_space_tl
       }
@@ -571,8 +575,8 @@
         \chemgreek_drop_symbol:n {##1}
         \chemgreek_drop_symbol:n
           {
-            \str_upper_case:f { \tl_head:n {##1} }
-            \str_lower_case:f { \tl_tail:n {##1} }
+            \str_uppercase:f { \tl_head:n {##1} }
+            \str_lowercase:f { \tl_tail:n {##1} }
           }
       }
   }
@@ -586,30 +590,30 @@
   {
     \int_to_symbols:nnn {#1} {24}
       {
-        {  1 } { \chemalpha }
-        {  2 } { \chembeta }
-        {  3 } { \chemgamma }
-        {  4 } { \chemdelta }
-        {  5 } { \chemepsilon }
-        {  6 } { \chemzeta }
-        {  7 } { \chemeta }
-        {  8 } { \chemiota }
-        {  9 } { \chemtheta }
-        { 10 } { \chemkappa }
-        { 11 } { \chemlambda }
-        { 12 } { \chemmu }
-        { 13 } { \chemnu }
-        { 14 } { \chemxi }
-        { 15 } { \chemomikron }
-        { 16 } { \chempi }
-        { 17 } { \chemrho }
-        { 18 } { \chemsigma }
-        { 19 } { \chemtau }
-        { 20 } { \chemupsilon }
-        { 21 } { \chemphi }
-        { 22 } { \chemchi }
-        { 23 } { \chempsi }
-        { 24 } { \chemomega }
+        {  1 } { \chemgreek_alpha: }
+        {  2 } { \chemgreek_beta: }
+        {  3 } { \chemgreek_gamma: }
+        {  4 } { \chemgreek_delta: }
+        {  5 } { \chemgreek_epsilon: }
+        {  6 } { \chemgreek_zeta: }
+        {  7 } { \chemgreek_eta: }
+        {  8 } { \chemgreek_iota: }
+        {  9 } { \chemgreek_theta: }
+        { 10 } { \chemgreek_kappa: }
+        { 11 } { \chemgreek_lambda: }
+        { 12 } { \chemgreek_mu: }
+        { 13 } { \chemgreek_nu: }
+        { 14 } { \chemgreek_xi: }
+        { 15 } { \chemgreek_omikron: }
+        { 16 } { \chemgreek_pi: }
+        { 17 } { \chemgreek_rho: }
+        { 18 } { \chemgreek_sigma: }
+        { 19 } { \chemgreek_tau: }
+        { 20 } { \chemgreek_upsilon: }
+        { 21 } { \chemgreek_phi: }
+        { 22 } { \chemgreek_chi: }
+        { 23 } { \chemgreek_psi: }
+        { 24 } { \chemgreek_omega: }
       }
   }
 
@@ -617,30 +621,30 @@
   {
     \int_to_symbols:nnn {#1} {24}
       {
-        {  1 } { \chemAlpha }
-        {  2 } { \chemBeta }
-        {  3 } { \chemGamma }
-        {  4 } { \chemDelta }
-        {  5 } { \chemEpsilon }
-        {  6 } { \chemZeta }
-        {  7 } { \chemEta }
-        {  8 } { \chemIota }
-        {  9 } { \chemTheta }
-        { 10 } { \chemKappa }
-        { 11 } { \chemLambda }
-        { 12 } { \chemMu }
-        { 13 } { \chemNu }
-        { 14 } { \chemXi }
-        { 15 } { \chemOmikron }
-        { 16 } { \chemPi }
-        { 17 } { \chemRho }
-        { 18 } { \chemSigma }
-        { 19 } { \chemTau }
-        { 20 } { \chemUpsilon }
-        { 21 } { \chemPhi }
-        { 22 } { \chemChi }
-        { 23 } { \chemPsi }
-        { 24 } { \chemOmega }
+        {  1 } { \chemgreek_Alpha: }
+        {  2 } { \chemgreek_Beta: }
+        {  3 } { \chemgreek_Gamma: }
+        {  4 } { \chemgreek_Delta: }
+        {  5 } { \chemgreek_Epsilon: }
+        {  6 } { \chemgreek_Zeta: }
+        {  7 } { \chemgreek_Eta: }
+        {  8 } { \chemgreek_Iota: }
+        {  9 } { \chemgreek_Theta: }
+        { 10 } { \chemgreek_Kappa: }
+        { 11 } { \chemgreek_Lambda: }
+        { 12 } { \chemgreek_Mu: }
+        { 13 } { \chemgreek_Nu: }
+        { 14 } { \chemgreek_Xi: }
+        { 15 } { \chemgreek_Omikron: }
+        { 16 } { \chemgreek_Pi: }
+        { 17 } { \chemgreek_Rho: }
+        { 18 } { \chemgreek_Sigma: }
+        { 19 } { \chemgreek_Tau: }
+        { 20 } { \chemgreek_Upsilon: }
+        { 21 } { \chemgreek_Phi: }
+        { 22 } { \chemgreek_Chi: }
+        { 23 } { \chemgreek_Psi: }
+        { 24 } { \chemgreek_Omega: }
       }
   }
 
@@ -649,88 +653,88 @@
 % default:
 \chemgreek_new_mapping:nnn {default} { }
   {
-    \ensuremath{\alpha}   / \ensuremath{\mathrm{A}} , %  1
-    \ensuremath{\beta}    / \ensuremath{\mathrm{B}} , %  2
-    \ensuremath{\gamma}   / \ensuremath{\Gamma} ,     %  3
-    \ensuremath{\delta}   / \ensuremath{\Delta} ,     %  4
-    \ensuremath{\epsilon} / \ensuremath{\mathrm{E}} , %  5
-    \ensuremath{\zeta}    / \ensuremath{\mathrm{Z}} , %  6
-    \ensuremath{\eta}     / \ensuremath{\mathrm{H}} , %  7
-    \ensuremath{\theta}   / \ensuremath{\Theta} ,     %  8
-    \ensuremath{\iota}    / \ensuremath{\mathrm{I}} , %  9
-    \ensuremath{\kappa}   / \ensuremath{\mathrm{K}} , % 10
-    \ensuremath{\lambda}  / \ensuremath{\Lambda} ,    % 11
-    \ensuremath{\mu}      / \ensuremath{\mathrm{M}} , % 12
-    \ensuremath{\nu}      / \ensuremath{\mathrm{N}} , % 13
-    \ensuremath{\xi}      / \ensuremath{\Xi} ,        % 14
-    \ensuremath{o}        / \ensuremath{\mathrm{O}} , % 15
-    \ensuremath{\pi}      / \ensuremath{\Pi} ,        % 16
-    \ensuremath{\rho}     / \ensuremath{\mathrm{P}} , % 17
-    \ensuremath{\sigma}   / \ensuremath{\Sigma} ,     % 18
-    \ensuremath{\tau}     / \ensuremath{\mathrm{T}} , % 19
-    \ensuremath{\upsilon} / \ensuremath{\Upsilon} ,   % 20
-    \ensuremath{\phi}     / \ensuremath{\Phi} ,       % 21
-    \ensuremath{\chi}     / \ensuremath{\mathrm{X}} , % 22
-    \ensuremath{\psi}     / \ensuremath{\Psi},        % 23
-    \ensuremath{\omega}   / \ensuremath{\Omega}       % 24
+    \ensuremath {\alpha}   / \ensuremath {\mathrm{A}} , %  1
+    \ensuremath {\beta}    / \ensuremath {\mathrm{B}} , %  2
+    \ensuremath {\gamma}   / \ensuremath {\Gamma} ,     %  3
+    \ensuremath {\delta}   / \ensuremath {\Delta} ,     %  4
+    \ensuremath {\epsilon} / \ensuremath {\mathrm{E}} , %  5
+    \ensuremath {\zeta}    / \ensuremath {\mathrm{Z}} , %  6
+    \ensuremath {\eta}     / \ensuremath {\mathrm{H}} , %  7
+    \ensuremath {\theta}   / \ensuremath {\Theta} ,     %  8
+    \ensuremath {\iota}    / \ensuremath {\mathrm{I}} , %  9
+    \ensuremath {\kappa}   / \ensuremath {\mathrm{K}} , % 10
+    \ensuremath {\lambda}  / \ensuremath {\Lambda} ,    % 11
+    \ensuremath {\mu}      / \ensuremath {\mathrm{M}} , % 12
+    \ensuremath {\nu}      / \ensuremath {\mathrm{N}} , % 13
+    \ensuremath {\xi}      / \ensuremath {\Xi} ,        % 14
+    \ensuremath {o}        / \ensuremath {\mathrm{O}} , % 15
+    \ensuremath {\pi}      / \ensuremath {\Pi} ,        % 16
+    \ensuremath {\rho}     / \ensuremath {\mathrm{P}} , % 17
+    \ensuremath {\sigma}   / \ensuremath {\Sigma} ,     % 18
+    \ensuremath {\tau}     / \ensuremath {\mathrm{T}} , % 19
+    \ensuremath {\upsilon} / \ensuremath {\Upsilon} ,   % 20
+    \ensuremath {\phi}     / \ensuremath {\Phi} ,       % 21
+    \ensuremath {\chi}     / \ensuremath {\mathrm{X}} , % 22
+    \ensuremath {\psi}     / \ensuremath {\Psi},        % 23
+    \ensuremath {\omega}   / \ensuremath {\Omega}       % 24
   }
 
 % default-variant:
 \chemgreek_new_mapping:nnn {var-default} { }
   {
-    \ensuremath{\alpha}      / \ensuremath{\mathrm{A}} , %  1
-    \ensuremath{\beta}       / \ensuremath{\mathrm{B}} , %  2
-    \ensuremath{\gamma}      / \ensuremath{\Gamma} ,     %  3
-    \ensuremath{\delta}      / \ensuremath{\Delta} ,     %  4
-    \ensuremath{\varepsilon} / \ensuremath{\mathrm{E}} , %  5
-    \ensuremath{\zeta}       / \ensuremath{\mathrm{Z}} , %  6
-    \ensuremath{\eta}        / \ensuremath{\mathrm{H}} , %  7
-    \ensuremath{\vartheta}   / \ensuremath{\Theta} ,     %  8
-    \ensuremath{\iota}       / \ensuremath{\mathrm{I}} , %  9
-    \ensuremath{\kappa}      / \ensuremath{\mathrm{K}} , % 10
-    \ensuremath{\lambda}     / \ensuremath{\Lambda} ,    % 11
-    \ensuremath{\mu}         / \ensuremath{\mathrm{M}} , % 12
-    \ensuremath{\nu}         / \ensuremath{\mathrm{N}} , % 13
-    \ensuremath{\xi}         / \ensuremath{\Xi} ,        % 14
-    \ensuremath{o}           / \ensuremath{\mathrm{O}} , % 15
-    \ensuremath{\varpi}      / \ensuremath{\Pi} ,        % 16
-    \ensuremath{\varrho}     / \ensuremath{\mathrm{P}} , % 17
-    \ensuremath{\varsigma}   / \ensuremath{\Sigma} ,     % 18
-    \ensuremath{\tau}        / \ensuremath{\mathrm{T}} , % 19
-    \ensuremath{\upsilon}    / \ensuremath{\Upsilon} ,   % 20
-    \ensuremath{\varphi}     / \ensuremath{\Phi} ,       % 21
-    \ensuremath{\chi}        / \ensuremath{\mathrm{X}} , % 22
-    \ensuremath{\psi}        / \ensuremath{\Psi} ,       % 23
-    \ensuremath{\omega}      / \ensuremath{\Omega}       % 24
+    \ensuremath {\alpha}      / \ensuremath {\mathrm{A}} , %  1
+    \ensuremath {\beta}       / \ensuremath {\mathrm{B}} , %  2
+    \ensuremath {\gamma}      / \ensuremath {\Gamma} ,     %  3
+    \ensuremath {\delta}      / \ensuremath {\Delta} ,     %  4
+    \ensuremath {\varepsilon} / \ensuremath {\mathrm{E}} , %  5
+    \ensuremath {\zeta}       / \ensuremath {\mathrm{Z}} , %  6
+    \ensuremath {\eta}        / \ensuremath {\mathrm{H}} , %  7
+    \ensuremath {\vartheta}   / \ensuremath {\Theta} ,     %  8
+    \ensuremath {\iota}       / \ensuremath {\mathrm{I}} , %  9
+    \ensuremath {\kappa}      / \ensuremath {\mathrm{K}} , % 10
+    \ensuremath {\lambda}     / \ensuremath {\Lambda} ,    % 11
+    \ensuremath {\mu}         / \ensuremath {\mathrm{M}} , % 12
+    \ensuremath {\nu}         / \ensuremath {\mathrm{N}} , % 13
+    \ensuremath {\xi}         / \ensuremath {\Xi} ,        % 14
+    \ensuremath {o}           / \ensuremath {\mathrm{O}} , % 15
+    \ensuremath {\varpi}      / \ensuremath {\Pi} ,        % 16
+    \ensuremath {\varrho}     / \ensuremath {\mathrm{P}} , % 17
+    \ensuremath {\varsigma}   / \ensuremath {\Sigma} ,     % 18
+    \ensuremath {\tau}        / \ensuremath {\mathrm{T}} , % 19
+    \ensuremath {\upsilon}    / \ensuremath {\Upsilon} ,   % 20
+    \ensuremath {\varphi}     / \ensuremath {\Phi} ,       % 21
+    \ensuremath {\chi}        / \ensuremath {\mathrm{X}} , % 22
+    \ensuremath {\psi}        / \ensuremath {\Psi} ,       % 23
+    \ensuremath {\omega}      / \ensuremath {\Omega}       % 24
   }
 
 % mathdesign:
 \chemgreek_new_mapping:nnn {mathdesign} {mathdesign}
   {
-    \ensuremath{\alphaup}      / \ensuremath{\mathrm{A}} , %  1
-    \ensuremath{\betaup}       / \ensuremath{\mathrm{B}} , %  2
-    \ensuremath{\gammaup}      / \ensuremath{\Gammaup} ,   %  3
-    \ensuremath{\deltaup}      / \ensuremath{\Deltaup} ,   %  4
-    \ensuremath{\epsilonup}    / \ensuremath{\mathrm{E}} , %  5
-    \ensuremath{\zetaup}       / \ensuremath{\mathrm{Z}} , %  6
-    \ensuremath{\etaup}        / \ensuremath{\mathrm{H}} , %  7
-    \ensuremath{\thetaup}      / \ensuremath{\Thetaup} ,   %  8
-    \ensuremath{\iotaup}       / \ensuremath{\mathrm{I}} , %  9
-    \ensuremath{\kappaup}      / \ensuremath{\mathrm{K}} , % 10
-    \ensuremath{\lambdaup}     / \ensuremath{\Lambdaup} ,  % 11
-    \ensuremath{\muup}         / \ensuremath{\mathrm{M}} , % 12
-    \ensuremath{\nuup}         / \ensuremath{\mathrm{N}} , % 13
-    \ensuremath{\xiup}         / \ensuremath{\Xiup} ,      % 14
-    \ensuremath{\mathrm{o}}    / \ensuremath{\mathrm{O}} , % 15
-    \ensuremath{\piup}         / \ensuremath{\Piup} ,      % 16
-    \ensuremath{\rhoup}        / \ensuremath{\mathrm{R}} , % 17
-    \ensuremath{\sigmaup}      / \ensuremath{\Sigmaup} ,   % 18
-    \ensuremath{\tauup}        / \ensuremath{\mathrm{T}} , % 19
-    \ensuremath{\upsilonup}    / \ensuremath{\Upsilonup} , % 20
-    \ensuremath{\phiup}        / \ensuremath{\Phiup} ,     % 21
-    \ensuremath{\chiup}        / \ensuremath{\mathrm{X}} , % 22
-    \ensuremath{\psiup}        / \ensuremath{\Psiup} ,     % 23
-    \ensuremath{\omegaup}      / \ensuremath{\Omegaup}     % 24
+    \ensuremath {\alphaup}   / \ensuremath {\mathrm{A}} , %  1
+    \ensuremath {\betaup}    / \ensuremath {\mathrm{B}} , %  2
+    \ensuremath {\gammaup}   / \ensuremath {\Gammaup} ,   %  3
+    \ensuremath {\deltaup}   / \ensuremath {\Deltaup} ,   %  4
+    \ensuremath {\epsilonup} / \ensuremath {\mathrm{E}} , %  5
+    \ensuremath {\zetaup}    / \ensuremath {\mathrm{Z}} , %  6
+    \ensuremath {\etaup}     / \ensuremath {\mathrm{H}} , %  7
+    \ensuremath {\thetaup}   / \ensuremath {\Thetaup} ,   %  8
+    \ensuremath {\iotaup}    / \ensuremath {\mathrm{I}} , %  9
+    \ensuremath {\kappaup}   / \ensuremath {\mathrm{K}} , % 10
+    \ensuremath {\lambdaup}  / \ensuremath {\Lambdaup} ,  % 11
+    \ensuremath {\muup}      / \ensuremath {\mathrm{M}} , % 12
+    \ensuremath {\nuup}      / \ensuremath {\mathrm{N}} , % 13
+    \ensuremath {\xiup}      / \ensuremath {\Xiup} ,      % 14
+    \ensuremath {\mathrm{o}} / \ensuremath {\mathrm{O}} , % 15
+    \ensuremath {\piup}      / \ensuremath {\Piup} ,      % 16
+    \ensuremath {\rhoup}     / \ensuremath {\mathrm{R}} , % 17
+    \ensuremath {\sigmaup}   / \ensuremath {\Sigmaup} ,   % 18
+    \ensuremath {\tauup}     / \ensuremath {\mathrm{T}} , % 19
+    \ensuremath {\upsilonup} / \ensuremath {\Upsilonup} , % 20
+    \ensuremath {\phiup}     / \ensuremath {\Phiup} ,     % 21
+    \ensuremath {\chiup}     / \ensuremath {\mathrm{X}} , % 22
+    \ensuremath {\psiup}     / \ensuremath {\Psiup} ,     % 23
+    \ensuremath {\omegaup}   / \ensuremath {\Omegaup}     % 24
   }
 
 % textgreek:
@@ -765,88 +769,88 @@
 % upgreek:
 \chemgreek_new_mapping:nnn {upgreek} {upgreek}
   {
-    \ensuremath{\upalpha}      / \ensuremath{\mathrm{A}} , %  1
-    \ensuremath{\upbeta}       / \ensuremath{\mathrm{B}} , %  2
-    \ensuremath{\upgamma}      / \ensuremath{\Upgamma} ,   %  3
-    \ensuremath{\updelta}      / \ensuremath{\Updelta} ,   %  4
-    \ensuremath{\upepsilon}    / \ensuremath{\mathrm{E}} , %  5
-    \ensuremath{\upzeta}       / \ensuremath{\mathrm{Z}} , %  6
-    \ensuremath{\upeta}        / \ensuremath{\mathrm{H}} , %  7
-    \ensuremath{\uptheta}      / \ensuremath{\Uptheta} ,   %  8
-    \ensuremath{\upiota}       / \ensuremath{\mathrm{I}} ,   %  9
-    \ensuremath{\upkappa}      / \ensuremath{\mathrm{K}} , % 10
-    \ensuremath{\uplambda}     / \ensuremath{\Uplambda} ,  % 11
-    \ensuremath{\upmu}         / \ensuremath{\mathrm{M}} , % 12
-    \ensuremath{\upnu}         / \ensuremath{\mathrm{N}} , % 13
-    \ensuremath{\upxi}         / \ensuremath{\Upxi} ,      % 14
-    \ensuremath{\mathrm{o}}    / \ensuremath{\mathrm{O}} , % 15
-    \ensuremath{\uppi}         / \ensuremath{\Uppi} ,      % 16
-    \ensuremath{\uprho}        / \ensuremath{\mathrm{R}} , % 17
-    \ensuremath{\upsigma}      / \ensuremath{\Upsigma} ,   % 18
-    \ensuremath{\uptau}        / \ensuremath{\mathrm{T}} , % 19
-    \ensuremath{\upupsilon}    / \ensuremath{\Upupsilon} , % 20
-    \ensuremath{\upphi}        / \ensuremath{\Upphi} ,     % 21
-    \ensuremath{\upchi}        / \ensuremath{\mathrm{X}} , % 22
-    \ensuremath{\uppsi}        / \ensuremath{\Uppsi} ,     % 23
-    \ensuremath{\upomega}      / \ensuremath{\Upomega}     % 24
+    \ensuremath {\upalpha}   / \ensuremath {\mathrm{A}} , %  1
+    \ensuremath {\upbeta}    / \ensuremath {\mathrm{B}} , %  2
+    \ensuremath {\upgamma}   / \ensuremath {\Upgamma} ,   %  3
+    \ensuremath {\updelta}   / \ensuremath {\Updelta} ,   %  4
+    \ensuremath {\upepsilon} / \ensuremath {\mathrm{E}} , %  5
+    \ensuremath {\upzeta}    / \ensuremath {\mathrm{Z}} , %  6
+    \ensuremath {\upeta}     / \ensuremath {\mathrm{H}} , %  7
+    \ensuremath {\uptheta}   / \ensuremath {\Uptheta} ,   %  8
+    \ensuremath {\upiota}    / \ensuremath {\mathrm{I}} ,   %  9
+    \ensuremath {\upkappa}   / \ensuremath {\mathrm{K}} , % 10
+    \ensuremath {\uplambda}  / \ensuremath {\Uplambda} ,  % 11
+    \ensuremath {\upmu}      / \ensuremath {\mathrm{M}} , % 12
+    \ensuremath {\upnu}      / \ensuremath {\mathrm{N}} , % 13
+    \ensuremath {\upxi}      / \ensuremath {\Upxi} ,      % 14
+    \ensuremath {\mathrm{o}} / \ensuremath {\mathrm{O}} , % 15
+    \ensuremath {\uppi}      / \ensuremath {\Uppi} ,      % 16
+    \ensuremath {\uprho}     / \ensuremath {\mathrm{R}} , % 17
+    \ensuremath {\upsigma}   / \ensuremath {\Upsigma} ,   % 18
+    \ensuremath {\uptau}     / \ensuremath {\mathrm{T}} , % 19
+    \ensuremath {\upupsilon} / \ensuremath {\Upupsilon} , % 20
+    \ensuremath {\upphi}     / \ensuremath {\Upphi} ,     % 21
+    \ensuremath {\upchi}     / \ensuremath {\mathrm{X}} , % 22
+    \ensuremath {\uppsi}     / \ensuremath {\Uppsi} ,     % 23
+    \ensuremath {\upomega}   / \ensuremath {\Upomega}     % 24
   }
 
 % kpfonts:
 \chemgreek_new_mapping:nnn {kpfonts} {kpfonts}
   {
-    \ensuremath{\alphaup}      / \ensuremath{\mathrm{A}} , %  1
-    \ensuremath{\betaup}       / \ensuremath{\mathrm{B}} , %  2
-    \ensuremath{\gammaup}      / \ensuremath{\Gammaup} ,   %  3
-    \ensuremath{\deltaup}      / \ensuremath{\Deltaup} ,   %  4
-    \ensuremath{\epsilonup}    / \ensuremath{\mathrm{E}} , %  5
-    \ensuremath{\zetaup}       / \ensuremath{\mathrm{Z}} , %  6
-    \ensuremath{\etaup}        / \ensuremath{\mathrm{H}} , %  7
-    \ensuremath{\thetaup}      / \ensuremath{\Thetaup} ,   %  8
-    \ensuremath{\iotaup}       / \ensuremath{\mathrm{I}} , %  9
-    \ensuremath{\kappaup}      / \ensuremath{\mathrm{K}} , % 10
-    \ensuremath{\lambdaup}     / \ensuremath{\Lambdaup} ,  % 11
-    \ensuremath{\muup}         / \ensuremath{\mathrm{M}} , % 12
-    \ensuremath{\nuup}         / \ensuremath{\mathrm{N}} , % 13
-    \ensuremath{\xiup}         / \ensuremath{\Xiup} ,      % 14
-    \ensuremath{\mathrm{o}}    / \ensuremath{\mathrm{O}} , % 15
-    \ensuremath{\piup}         / \ensuremath{\Piup} ,      % 16
-    \ensuremath{\rhoup}        / \ensuremath{\mathrm{R}} , % 17
-    \ensuremath{\sigmaup}      / \ensuremath{\Sigmaup} ,   % 18
-    \ensuremath{\tauup}        / \ensuremath{\mathrm{T}} , % 19
-    \ensuremath{\upsilonup}    / \ensuremath{\Upsilonup} , % 20
-    \ensuremath{\phiup}        / \ensuremath{\Phiup} ,     % 21
-    \ensuremath{\chiup}        / \ensuremath{\mathrm{X}} , % 22
-    \ensuremath{\psiup}        / \ensuremath{\Psiup} ,     % 23
-    \ensuremath{\omegaup}      / \ensuremath{\Omegaup}     % 24
+    \ensuremath {\alphaup}   / \ensuremath {\mathrm{A}} , %  1
+    \ensuremath {\betaup}    / \ensuremath {\mathrm{B}} , %  2
+    \ensuremath {\gammaup}   / \ensuremath {\Gammaup} ,   %  3
+    \ensuremath {\deltaup}   / \ensuremath {\Deltaup} ,   %  4
+    \ensuremath {\epsilonup} / \ensuremath {\mathrm{E}} , %  5
+    \ensuremath {\zetaup}    / \ensuremath {\mathrm{Z}} , %  6
+    \ensuremath {\etaup}     / \ensuremath {\mathrm{H}} , %  7
+    \ensuremath {\thetaup}   / \ensuremath {\Thetaup} ,   %  8
+    \ensuremath {\iotaup}    / \ensuremath {\mathrm{I}} , %  9
+    \ensuremath {\kappaup}   / \ensuremath {\mathrm{K}} , % 10
+    \ensuremath {\lambdaup}  / \ensuremath {\Lambdaup} ,  % 11
+    \ensuremath {\muup}      / \ensuremath {\mathrm{M}} , % 12
+    \ensuremath {\nuup}      / \ensuremath {\mathrm{N}} , % 13
+    \ensuremath {\xiup}      / \ensuremath {\Xiup} ,      % 14
+    \ensuremath {\mathrm{o}} / \ensuremath {\mathrm{O}} , % 15
+    \ensuremath {\piup}      / \ensuremath {\Piup} ,      % 16
+    \ensuremath {\rhoup}     / \ensuremath {\mathrm{R}} , % 17
+    \ensuremath {\sigmaup}   / \ensuremath {\Sigmaup} ,   % 18
+    \ensuremath {\tauup}     / \ensuremath {\mathrm{T}} , % 19
+    \ensuremath {\upsilonup} / \ensuremath {\Upsilonup} , % 20
+    \ensuremath {\phiup}     / \ensuremath {\Phiup} ,     % 21
+    \ensuremath {\chiup}     / \ensuremath {\mathrm{X}} , % 22
+    \ensuremath {\psiup}     / \ensuremath {\Psiup} ,     % 23
+    \ensuremath {\omegaup}   / \ensuremath {\Omegaup}     % 24
   }
 
 % newtx:
 \chemgreek_new_mapping:nnn {newtx} {newtxmath}
   {
-    \ensuremath{\upalpha}      / \ensuremath{\mathrm{A}} , %  1
-    \ensuremath{\upbeta}       / \ensuremath{\mathrm{B}} , %  2
-    \ensuremath{\upgamma}      / \ensuremath{\upGamma} ,   %  3
-    \ensuremath{\updelta}      / \ensuremath{\upDelta} ,   %  4
-    \ensuremath{\upepsilon}    / \ensuremath{\mathrm{E}} , %  5
-    \ensuremath{\upzeta}       / \ensuremath{\mathrm{Z}} , %  6
-    \ensuremath{\upeta}        / \ensuremath{\mathrm{H}} , %  7
-    \ensuremath{\uptheta}      / \ensuremath{\upTheta} ,   %  8
-    \ensuremath{\upiota}       / \ensuremath{\mathrm{I}} , %  9
-    \ensuremath{\upkappa}      / \ensuremath{\mathrm{K}} , % 10
-    \ensuremath{\uplambda}     / \ensuremath{\upLambda} ,  % 11
-    \ensuremath{\upmu}         / \ensuremath{\mathrm{M}} , % 12
-    \ensuremath{\upnu}         / \ensuremath{\mathrm{N}} , % 13
-    \ensuremath{\upxi}         / \ensuremath{\upXi} ,      % 14
-    \ensuremath{\mathrm{o}}    / \ensuremath{\mathrm{O}} , % 15
-    \ensuremath{\uppi}         / \ensuremath{\upPi} ,      % 16
-    \ensuremath{\uprho}        / \ensuremath{\mathrm{R}} , % 17
-    \ensuremath{\upsigma}      / \ensuremath{\upSigma} ,   % 18
-    \ensuremath{\uptau}        / \ensuremath{\mathrm{T}} , % 19
-    \ensuremath{\upupsilon}    / \ensuremath{\upUpsilon} , % 20
-    \ensuremath{\upphi}        / \ensuremath{\upPhi} ,     % 21
-    \ensuremath{\upchi}        / \ensuremath{\mathrm{X}} , % 22
-    \ensuremath{\uppsi}        / \ensuremath{\upPsi} ,     % 23
-    \ensuremath{\upomega}      / \ensuremath{\upOmega}     % 24
+    \ensuremath {\upalpha}   / \ensuremath {\mathrm{A}} , %  1
+    \ensuremath {\upbeta}    / \ensuremath {\mathrm{B}} , %  2
+    \ensuremath {\upgamma}   / \ensuremath {\upGamma} ,   %  3
+    \ensuremath {\updelta}   / \ensuremath {\upDelta} ,   %  4
+    \ensuremath {\upepsilon} / \ensuremath {\mathrm{E}} , %  5
+    \ensuremath {\upzeta}    / \ensuremath {\mathrm{Z}} , %  6
+    \ensuremath {\upeta}     / \ensuremath {\mathrm{H}} , %  7
+    \ensuremath {\uptheta}   / \ensuremath {\upTheta} ,   %  8
+    \ensuremath {\upiota}    / \ensuremath {\mathrm{I}} , %  9
+    \ensuremath {\upkappa}   / \ensuremath {\mathrm{K}} , % 10
+    \ensuremath {\uplambda}  / \ensuremath {\upLambda} ,  % 11
+    \ensuremath {\upmu}      / \ensuremath {\mathrm{M}} , % 12
+    \ensuremath {\upnu}      / \ensuremath {\mathrm{N}} , % 13
+    \ensuremath {\upxi}      / \ensuremath {\upXi} ,      % 14
+    \ensuremath {\mathrm{o}} / \ensuremath {\mathrm{O}} , % 15
+    \ensuremath {\uppi}      / \ensuremath {\upPi} ,      % 16
+    \ensuremath {\uprho}     / \ensuremath {\mathrm{R}} , % 17
+    \ensuremath {\upsigma}   / \ensuremath {\upSigma} ,   % 18
+    \ensuremath {\uptau}     / \ensuremath {\mathrm{T}} , % 19
+    \ensuremath {\upupsilon} / \ensuremath {\upUpsilon} , % 20
+    \ensuremath {\upphi}     / \ensuremath {\upPhi} ,     % 21
+    \ensuremath {\upchi}     / \ensuremath {\mathrm{X}} , % 22
+    \ensuremath {\uppsi}     / \ensuremath {\upPsi} ,     % 23
+    \ensuremath {\upomega}   / \ensuremath {\upOmega}     % 24
   }
 
 % fourier:
@@ -866,28 +870,28 @@
 
 \chemgreek_new_mapping:nnn {fourier} {fourier}
   {
-    \__chemgreek_lfourier:n {alpha}   / \ensuremath{\mathrm{A}} ,           %  1
-    \__chemgreek_lfourier:n {beta}    / \ensuremath{\mathrm{B}} ,           %  2
+    \__chemgreek_lfourier:n {alpha}   / \ensuremath {\mathrm{A}} ,          %  1
+    \__chemgreek_lfourier:n {beta}    / \ensuremath {\mathrm{B}} ,          %  2
     \__chemgreek_lfourier:n {gamma}   / \__chemgreek_ufourier:n {Gamma} ,   %  3
     \__chemgreek_lfourier:n {delta}   / \__chemgreek_ufourier:n {Delta} ,   %  4
-    \__chemgreek_lfourier:n {epsilon} / \ensuremath{\mathrm{E}} ,           %  5
-    \__chemgreek_lfourier:n {zeta}    / \ensuremath{\mathrm{Z}} ,           %  6
-    \__chemgreek_lfourier:n {eta}     / \ensuremath{\mathrm{H}} ,           %  7
+    \__chemgreek_lfourier:n {epsilon} / \ensuremath {\mathrm{E}} ,          %  5
+    \__chemgreek_lfourier:n {zeta}    / \ensuremath {\mathrm{Z}} ,          %  6
+    \__chemgreek_lfourier:n {eta}     / \ensuremath {\mathrm{H}} ,          %  7
     \__chemgreek_lfourier:n {theta}   / \__chemgreek_ufourier:n {Theta} ,   %  8
-    \__chemgreek_lfourier:n {iota}    / \ensuremath{\mathrm{I}} ,           %  9
-    \__chemgreek_lfourier:n {kappa}   / \ensuremath{\mathrm{K}} ,           % 10
+    \__chemgreek_lfourier:n {iota}    / \ensuremath {\mathrm{I}} ,          %  9
+    \__chemgreek_lfourier:n {kappa}   / \ensuremath {\mathrm{K}} ,          % 10
     \__chemgreek_lfourier:n {lambda}  / \__chemgreek_ufourier:n {Lambda} ,  % 11
-    \__chemgreek_lfourier:n {mu}      / \ensuremath{\mathrm{M}} ,           % 12
-    \__chemgreek_lfourier:n {nu}      / \ensuremath{\mathrm{N}} ,           % 13
+    \__chemgreek_lfourier:n {mu}      / \ensuremath {\mathrm{M}} ,          % 12
+    \__chemgreek_lfourier:n {nu}      / \ensuremath {\mathrm{N}} ,          % 13
     \__chemgreek_lfourier:n {xi}      / \__chemgreek_ufourier:n {Xi} ,      % 14
-    \ensuremath {\mathrm{o}}          / \ensuremath{\mathrm{O}} ,           % 15
+    \ensuremath {\mathrm{o}}          / \ensuremath {\mathrm{O}} ,          % 15
     \__chemgreek_lfourier:n {pi}      / \__chemgreek_ufourier:n {Pi} ,      % 16
-    \__chemgreek_lfourier:n {rho}     / \ensuremath{\mathrm{R}} ,           % 17
+    \__chemgreek_lfourier:n {rho}     / \ensuremath {\mathrm{R}} ,          % 17
     \__chemgreek_lfourier:n {sigma}   / \__chemgreek_ufourier:n {Sigma} ,   % 18
-    \__chemgreek_lfourier:n {tau}     / \ensuremath{\mathrm{T}} ,           % 19
+    \__chemgreek_lfourier:n {tau}     / \ensuremath {\mathrm{T}} ,          % 19
     \__chemgreek_lfourier:n {upsilon} / \__chemgreek_ufourier:n {Upsilon} , % 20
     \__chemgreek_lfourier:n {phi}     / \__chemgreek_ufourier:n {Phi} ,     % 21
-    \__chemgreek_lfourier:n {chi}     / \ensuremath{\mathrm{X}} ,           % 22
+    \__chemgreek_lfourier:n {chi}     / \ensuremath {\mathrm{X}} ,          % 22
     \__chemgreek_lfourier:n {psi}     / \__chemgreek_ufourier:n {Psi} ,     % 23
     \__chemgreek_lfourier:n {omega}   / \__chemgreek_ufourier:n {Omega}     % 24
   }
@@ -960,30 +964,30 @@
 
 \chemgreek_new_mapping:nnn {pxgreeks} {pxgreeks}
   {
-    \ensuremath{\alphaup}      / \ensuremath{\mathrm{A}} ,            %  1
-    \ensuremath{\betaup}       / \ensuremath{\mathrm{B}} ,            %  2
-    \ensuremath{\gammaup}      / \__chemgreek_upxgreeks:n {Gamma} ,   %  3
-    \ensuremath{\deltaup}      / \__chemgreek_upxgreeks:n {Delta} ,   %  4
-    \ensuremath{\epsilonup}    / \ensuremath{\mathrm{E}} ,            %  5
-    \ensuremath{\zetaup}       / \ensuremath{\mathrm{Z}} ,            %  6
-    \ensuremath{\etaup}        / \ensuremath{\mathrm{H}} ,            %  7
-    \ensuremath{\thetaup}      / \__chemgreek_upxgreeks:n {Theta} ,   %  8
-    \ensuremath{\iotaup}       / \ensuremath{\mathrm{I}} ,            %  9
-    \ensuremath{\kappaup}      / \ensuremath{\mathrm{K}} ,            % 10
-    \ensuremath{\lambdaup}     / \__chemgreek_upxgreeks:n {Lambda} ,  % 11
-    \ensuremath{\muup}         / \ensuremath{\mathrm{M}} ,            % 12
-    \ensuremath{\nuup}         / \ensuremath{\mathrm{N}} ,            % 13
-    \ensuremath{\xiup}         / \__chemgreek_upxgreeks:n {Xi} ,      % 14
-    \ensuremath{\omicronup}    / \ensuremath{\mathrm{O}} ,            % 15
-    \ensuremath{\piup}         / \__chemgreek_upxgreeks:n {Pi} ,      % 16
-    \ensuremath{\rhoup}        / \ensuremath{\mathrm{R}} ,            % 17
-    \ensuremath{\sigmaup}      / \__chemgreek_upxgreeks:n {Sigma} ,   % 18
-    \ensuremath{\tauup}        / \ensuremath{\mathrm{T}} ,            % 19
-    \ensuremath{\upsilonup}    / \__chemgreek_upxgreeks:n {Upsilon} , % 20
-    \ensuremath{\phiup}        / \__chemgreek_upxgreeks:n {Phi} ,     % 21
-    \ensuremath{\chiup}        / \ensuremath{\mathrm{X}} ,            % 22
-    \ensuremath{\psiup}        / \__chemgreek_upxgreeks:n {Psi} ,     % 23
-    \ensuremath{\omegaup}      / \__chemgreek_upxgreeks:n {Omega}     % 24
+    \ensuremath {\alphaup}   / \ensuremath {\mathrm{A}} ,           %  1
+    \ensuremath {\betaup}    / \ensuremath {\mathrm{B}} ,           %  2
+    \ensuremath {\gammaup}   / \__chemgreek_upxgreeks:n {Gamma} ,   %  3
+    \ensuremath {\deltaup}   / \__chemgreek_upxgreeks:n {Delta} ,   %  4
+    \ensuremath {\epsilonup} / \ensuremath {\mathrm{E}} ,           %  5
+    \ensuremath {\zetaup}    / \ensuremath {\mathrm{Z}} ,           %  6
+    \ensuremath {\etaup}     / \ensuremath {\mathrm{H}} ,           %  7
+    \ensuremath {\thetaup}   / \__chemgreek_upxgreeks:n {Theta} ,   %  8
+    \ensuremath {\iotaup}    / \ensuremath {\mathrm{I}} ,           %  9
+    \ensuremath {\kappaup}   / \ensuremath {\mathrm{K}} ,           % 10
+    \ensuremath {\lambdaup}  / \__chemgreek_upxgreeks:n {Lambda} ,  % 11
+    \ensuremath {\muup}      / \ensuremath {\mathrm{M}} ,           % 12
+    \ensuremath {\nuup}      / \ensuremath {\mathrm{N}} ,           % 13
+    \ensuremath {\xiup}      / \__chemgreek_upxgreeks:n {Xi} ,      % 14
+    \ensuremath {\omicronup} / \ensuremath {\mathrm{O}} ,           % 15
+    \ensuremath {\piup}      / \__chemgreek_upxgreeks:n {Pi} ,      % 16
+    \ensuremath {\rhoup}     / \ensuremath {\mathrm{R}} ,           % 17
+    \ensuremath {\sigmaup}   / \__chemgreek_upxgreeks:n {Sigma} ,   % 18
+    \ensuremath {\tauup}     / \ensuremath {\mathrm{T}} ,           % 19
+    \ensuremath {\upsilonup} / \__chemgreek_upxgreeks:n {Upsilon} , % 20
+    \ensuremath {\phiup}     / \__chemgreek_upxgreeks:n {Phi} ,     % 21
+    \ensuremath {\chiup}     / \ensuremath {\mathrm{X}} ,           % 22
+    \ensuremath {\psiup}     / \__chemgreek_upxgreeks:n {Psi} ,     % 23
+    \ensuremath {\omegaup}   / \__chemgreek_upxgreeks:n {Omega}     % 24
   }
   
 % ----------------------------------------------------------------------------
@@ -1025,25 +1029,25 @@
                     \cs_set_eq:cc
                       {
                         chem
-                        \str_upper_case:f { \tl_head:n {#1} }
-                        \str_lower_case:f { \tl_tail:n {#1} }
+                        \str_uppercase:f { \tl_head:n {#1} }
+                        \str_lowercase:f { \tl_tail:n {#1} }
                       }
                       {
                         text
-                        \str_upper_case:f { \tl_head:n {#1} }
-                        \str_lower_case:f { \tl_tail:n {#1} }
+                        \str_uppercase:f { \tl_head:n {#1} }
+                        \str_lowercase:f { \tl_tail:n {#1} }
                       }
                     \cs_set_eq:cc
                       {
                         chemgreek_
-                        \str_upper_case:f { \tl_head:n {#1} }
-                        \str_lower_case:f { \tl_tail:n {#1} }
+                        \str_uppercase:f { \tl_head:n {#1} }
+                        \str_lowercase:f { \tl_tail:n {#1} }
                         :
                       }
                       {
                         text
-                        \str_upper_case:f { \tl_head:n {#1} }
-                        \str_lower_case:f { \tl_tail:n {#1} }
+                        \str_uppercase:f { \tl_head:n {#1} }
+                        \str_lowercase:f { \tl_tail:n {#1} }
                       }
                     \cs_set_eq:cc {chem#1} {text#1}
                     \cs_set_eq:cc { chemgreek_ #1 : } {text#1}
@@ -1103,6 +1107,5 @@ HISTORY:
 2016/02/10 - v1.0e - one missed \prop_get:Nn
 2016/20/12 - v1.1  - fix wrong alphabet order (issue #5)
                    - fix errors in fontspec mapping (issue #4)
-
-TODO:
+2020/01/16 - v1.1a - adapt to renaming of string case changing functions
 
diff --git a/macros/latex/contrib/chemgreek/chemgreek_en.pdf b/macros/latex/contrib/chemgreek/chemgreek_en.pdf
index d3169050cd..2ea798e7f1 100644
--- a/macros/latex/contrib/chemgreek/chemgreek_en.pdf
+++ b/macros/latex/contrib/chemgreek/chemgreek_en.pdf
diff --git a/macros/latex/contrib/chemgreek/chemgreek_en.tex b/macros/latex/contrib/chemgreek/chemgreek_en.tex
index d9f40da0a8..8308e9aef3 100644
--- a/macros/latex/contrib/chemgreek/chemgreek_en.tex
+++ b/macros/latex/contrib/chemgreek/chemgreek_en.tex
@@ -1,4 +1,4 @@
-% arara: pdflatex: { shell: on }
+% arara: pdflatex: { shell: on , interaction: nonstopmode }
 % !arara: biber
 % !arara: pdflatex
 % !arara: pdflatex
@@ -16,7 +16,7 @@
 % If you have any ideas, questions, suggestions or bugs to report, please
 % feel free to contact me.
 % --------------------------------------------------------------------------
-% Copyright 2011-2015 Clemens Niederberger
+% Copyright 2015--2020 Clemens Niederberger
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/README b/macros/latex/contrib/ghsystem/README
index 6d486c5d99..6117fa22c4 100644
--- a/macros/latex/contrib/ghsystem/README
+++ b/macros/latex/contrib/ghsystem/README
@@ -1,5 +1,5 @@
 --------------------------------------------------------------------------
-the GHSYSTEM package v4.8a 2019/09/30
+the GHSYSTEM package v4.8b 2020/01/16
 
   globally harmonized system
 
@@ -8,7 +8,7 @@ Clemens Niederberger
 Web:    https://github.com/cgnieder/ghsystem/
 E-Mail: contact@mychemistry.eu
 --------------------------------------------------------------------------
-Copyright 2011--2019 Clemens Niederberger
+Copyright 2011--2020 Clemens Niederberger
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/ghsystem.sty b/macros/latex/contrib/ghsystem/ghsystem.sty
index 3ff663d7c0..dfc4d1eacd 100644
--- a/macros/latex/contrib/ghsystem/ghsystem.sty
+++ b/macros/latex/contrib/ghsystem/ghsystem.sty
@@ -12,7 +12,7 @@
 % If you have any ideas, questions, suggestions or bugs to report, please
 % feel free to contact me.
 % --------------------------------------------------------------------------
-% Copyright 2011--2019 Clemens Niederberger
+% Copyright 2011--2020 Clemens Niederberger
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -29,8 +29,8 @@
 \RequirePackage{ expl3, xparse, chemmacros }
 \ExplSyntaxOn
 
-\tl_const:Nn \c_ghsystem_version_tl {4.8a}
-\tl_const:Nn \c_ghsystem_date_tl    {2019/09/30}
+\tl_const:Nn \c_ghsystem_version_tl {4.8b}
+\tl_const:Nn \c_ghsystem_date_tl    {2020/01/16}
 \tl_const:Nn \c_ghsystem_info_tl    {globally~ harmonised~ system}
 
 \ProvidesExplPackage
@@ -203,7 +203,7 @@
 % statement
 \cs_new_protected:Npn \ghsystem_add_statement:nnn #1#2#3
   {
-    \prop_put:cxn {l__ghsystem_ \str_lower_case:n {#1} _prop}
+    \prop_put:cxn {l__ghsystem_ \str_lowercase:n {#1} _prop}
       {\l_ghsystem_current_language_file_tl-#2}
       {#3}
   }
@@ -437,7 +437,7 @@
 
 \cs_new_protected:Nn \__ghsystem_get_type:nN
   {
-    \tl_set:Nx #2 { \str_lower_case:n {#1} }
+    \tl_set:Nx #2 { \str_lowercase:n {#1} }
     \str_case:VnF #2
       { {h} {} {p} {} {euh} {} }
       { \msg_error:nnn {ghsystem} {unknown-type} {#2} }
@@ -454,13 +454,13 @@
   {
     \bool_if:NT \l__ghsystem_show_number_bool
       {
-        \tl_upper_case:n {#1}
+        \text_uppercase:n {#1}
         \tl_use:N \l__ghsystem_number_space_tl
         #2 ~ + ~
         \tl_if_in:nnTF {#3} { + }
           { \__ghsystem_is_combination_aux_iii:w #1,#3 \q_stop }
           {
-            \tl_upper_case:n {#1}
+            \text_uppercase:n {#1}
             \tl_use:N \l__ghsystem_number_space_tl
             #3 \bool_if:NF \l__ghsystem_hide_statement_bool { : ~ }
           }
@@ -471,7 +471,7 @@
   {
     \bool_if:NT \l__ghsystem_show_number_bool
       {
-        \tl_upper_case:n {#1}
+        \text_uppercase:n {#1}
         \tl_use:N \l__ghsystem_number_space_tl
         #2 \bool_if:NF \l__ghsystem_hide_statement_bool { : ~ }
       }
@@ -481,10 +481,10 @@
   {
     \bool_if:NT \l__ghsystem_show_number_bool
       {
-        \tl_upper_case:n {#1}
+        \text_uppercase:n {#1}
         \tl_use:N \l__ghsystem_number_space_tl
         #2 ~ + ~
-        \tl_upper_case:n {#1}
+        \text_uppercase:n {#1}
         \tl_use:N \l__ghsystem_number_space_tl
         #3 \bool_if:NF \l__ghsystem_hide_statement_bool { : ~ }
       }
@@ -713,4 +713,4 @@ VERSION HISTORY
                             Beaude Aurélien
 2019/09/30 - version 4.8a - add \l_ghsystem_table_next_page_tl to the template
                             and the French translations
-
+2020/01/16 - version 4.8b - adapt to renaming of case changing functions
diff --git a/macros/latex/contrib/ghsystem/ghsystem_en.pdf b/macros/latex/contrib/ghsystem/ghsystem_en.pdf
index a18645c640..dccf33b05d 100644
--- a/macros/latex/contrib/ghsystem/ghsystem_en.pdf
+++ b/macros/latex/contrib/ghsystem/ghsystem_en.pdf
diff --git a/macros/latex/contrib/ghsystem/ghsystem_en.tex b/macros/latex/contrib/ghsystem/ghsystem_en.tex
index 24b9749e91..1267fb29e3 100644
--- a/macros/latex/contrib/ghsystem/ghsystem_en.tex
+++ b/macros/latex/contrib/ghsystem/ghsystem_en.tex
@@ -16,7 +16,7 @@
 % If you have any ideas, questions, suggestions or bugs to report, please
 % feel free to contact me.
 % --------------------------------------------------------------------------
-% Copyright 2011--2019 Clemens Niederberger
+% Copyright 2011--2020 Clemens Niederberger
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/language/ghsystem_english.def b/macros/latex/contrib/ghsystem/language/ghsystem_english.def
index e5b2c92f3c..67b579371c 100644
--- a/macros/latex/contrib/ghsystem/language/ghsystem_english.def
+++ b/macros/latex/contrib/ghsystem/language/ghsystem_english.def
@@ -11,7 +11,7 @@
 % - If you have any ideas, questions, suggestions or bugs to report, please
 % - feel free to contact me.
 % --------------------------------------------------------------------------
-% - Copyright 2011--2019 Clemens Niederberger
+% - Copyright 2011--2020 Clemens Niederberger
 % -
 % - This work may be distributed and/or modified under the
 % - conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/language/ghsystem_french.def b/macros/latex/contrib/ghsystem/language/ghsystem_french.def
index 14a7264e38..417df28349 100644
--- a/macros/latex/contrib/ghsystem/language/ghsystem_french.def
+++ b/macros/latex/contrib/ghsystem/language/ghsystem_french.def
@@ -11,7 +11,7 @@
 % - If you have any ideas, questions, suggestions or bugs to report, please
 % - feel free to contact me.
 % --------------------------------------------------------------------------
-% - Copyright 2011--2019 Clemens Niederberger
+% - Copyright 2011--2020 Clemens Niederberger
 % -
 % - This work may be distributed and/or modified under the
 % - conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/language/ghsystem_german.def b/macros/latex/contrib/ghsystem/language/ghsystem_german.def
index 82fbe3619c..f7f706996d 100644
--- a/macros/latex/contrib/ghsystem/language/ghsystem_german.def
+++ b/macros/latex/contrib/ghsystem/language/ghsystem_german.def
@@ -11,7 +11,7 @@
 % - If you have any ideas, questions, suggestions or bugs to report, please
 % - feel free to contact me.
 % --------------------------------------------------------------------------
-% - Copyright 2011--2019 Clemens Niederberger
+% - Copyright 2011--2020 Clemens Niederberger
 % -
 % - This work may be distributed and/or modified under the
 % - conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/language/ghsystem_italian.def b/macros/latex/contrib/ghsystem/language/ghsystem_italian.def
index 9159279f26..9d97ca043c 100644
--- a/macros/latex/contrib/ghsystem/language/ghsystem_italian.def
+++ b/macros/latex/contrib/ghsystem/language/ghsystem_italian.def
@@ -11,7 +11,7 @@
 % - If you have any ideas, questions, suggestions or bugs to report, please
 % - feel free to contact me.
 % --------------------------------------------------------------------------
-% - Copyright 2011--2019 Clemens Niederberger
+% - Copyright 2011--2020 Clemens Niederberger
 % -
 % - This work may be distributed and/or modified under the
 % - conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/language/ghsystem_langtemplate.def b/macros/latex/contrib/ghsystem/language/ghsystem_langtemplate.def
index 0652875739..52a6a21011 100644
--- a/macros/latex/contrib/ghsystem/language/ghsystem_langtemplate.def
+++ b/macros/latex/contrib/ghsystem/language/ghsystem_langtemplate.def
@@ -11,7 +11,7 @@
 % - If you have any ideas, questions, suggestions or bugs to report, please
 % - feel free to contact me.
 % --------------------------------------------------------------------------
-% - Copyright 2011--2019 Clemens Niederberger
+% - Copyright 2011--2020 Clemens Niederberger
 % -
 % - This work may be distributed and/or modified under the
 % - conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/ghsystem/language/ghsystem_spanish.def b/macros/latex/contrib/ghsystem/language/ghsystem_spanish.def
index 431bc02d1f..ecbf46fa17 100644
--- a/macros/latex/contrib/ghsystem/language/ghsystem_spanish.def
+++ b/macros/latex/contrib/ghsystem/language/ghsystem_spanish.def
@@ -11,7 +11,7 @@
 % - If you have any ideas, questions, suggestions or bugs to report, please
 % - feel free to contact me.
 % --------------------------------------------------------------------------
-% - Copyright 2011--2019 Clemens Niederberger
+% - Copyright 2011--2020 Clemens Niederberger
 % -
 % - This work may be distributed and/or modified under the
 % - conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/README b/macros/latex/contrib/xsim/README
index 0aa35c006f..c96de8d2a3 100644
--- a/macros/latex/contrib/xsim/README
+++ b/macros/latex/contrib/xsim/README
@@ -1,5 +1,6 @@
 --------------------------------------------------------------------------
-XSIM 2019/11/10 v0.16
+XSIM     2020/01/16 v0.16a
+XSIMVERB 2019/12/29 v0.1a
 
   eXercise Sheets IMproved
 
diff --git a/macros/latex/contrib/xsim/code/xsim.auxfile.code.tex b/macros/latex/contrib/xsim/code/xsim.auxfile.code.tex
index d308a9ccc3..69e5a9a618 100644
--- a/macros/latex/contrib/xsim/code/xsim.auxfile.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.auxfile.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.base.code.tex b/macros/latex/contrib/xsim/code/xsim.base.code.tex
index b1fa20bff7..3eb336e3a3 100644
--- a/macros/latex/contrib/xsim/code/xsim.base.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.base.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -143,6 +143,13 @@
       { \prg_return_false: }
   }
 
+\prg_new_conditional:Npnn \xsim_if_write_to_files: {p,T,F,TF}
+  {
+    \bool_if:NTF \g__xsim_write_to_file_bool
+      { \prg_return_true: }
+      { \prg_return_false: }
+  }
+
 \prg_new_conditional:Npnn \xsim_if_clear_aux: {p,T,F,TF}
   {
     \xsim_if_final:TF
diff --git a/macros/latex/contrib/xsim/code/xsim.blanks.code.tex b/macros/latex/contrib/xsim/code/xsim.blanks.code.tex
index 18af3f404d..70c4440537 100644
--- a/macros/latex/contrib/xsim/code/xsim.blanks.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.blanks.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.collections.code.tex b/macros/latex/contrib/xsim/code/xsim.collections.code.tex
index 3097981b74..eba9940e23 100644
--- a/macros/latex/contrib/xsim/code/xsim.collections.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.collections.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.definitions.code.tex b/macros/latex/contrib/xsim/code/xsim.definitions.code.tex
index 2a7add33de..c6fa9bd011 100644
--- a/macros/latex/contrib/xsim/code/xsim.definitions.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.definitions.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.environments.code.tex b/macros/latex/contrib/xsim/code/xsim.environments.code.tex
index 2f9c870b71..9c0c30111a 100644
--- a/macros/latex/contrib/xsim/code/xsim.environments.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.environments.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.exercises.code.tex b/macros/latex/contrib/xsim/code/xsim.exercises.code.tex
index f9cb706410..6f1503dbc4 100644
--- a/macros/latex/contrib/xsim/code/xsim.exercises.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.exercises.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.goals.code.tex b/macros/latex/contrib/xsim/code/xsim.goals.code.tex
index 6e482737b5..cf7975c4bd 100644
--- a/macros/latex/contrib/xsim/code/xsim.goals.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.goals.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.grades.code.tex b/macros/latex/contrib/xsim/code/xsim.grades.code.tex
index bfcecf92b2..678011c610 100644
--- a/macros/latex/contrib/xsim/code/xsim.grades.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.grades.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.interface.code.tex b/macros/latex/contrib/xsim/code/xsim.interface.code.tex
index ba409d9758..0eb8535e3f 100644
--- a/macros/latex/contrib/xsim/code/xsim.interface.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.interface.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.modules.code.tex b/macros/latex/contrib/xsim/code/xsim.modules.code.tex
index 3b874dbad0..bc82dcbafc 100644
--- a/macros/latex/contrib/xsim/code/xsim.modules.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.modules.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.properties.code.tex b/macros/latex/contrib/xsim/code/xsim.properties.code.tex
index 5dd0d1baee..add2431018 100644
--- a/macros/latex/contrib/xsim/code/xsim.properties.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.properties.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -182,7 +182,7 @@
 
 \cs_new_protected:Npn \__xsim_set_boolean_property:nnnn #1#2#3#4
   {
-    \str_case_e:nnTF { \str_lower_case:n {#4} }
+    \str_case_e:nnTF { \str_lowercase:n {#4} }
       {
         {} {}
         {true} {}
diff --git a/macros/latex/contrib/xsim/code/xsim.random.code.tex b/macros/latex/contrib/xsim/code/xsim.random.code.tex
index 7a0eeb297d..2444ef1745 100644
--- a/macros/latex/contrib/xsim/code/xsim.random.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.random.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.solutions.code.tex b/macros/latex/contrib/xsim/code/xsim.solutions.code.tex
index edb954e838..eddeaa911f 100644
--- a/macros/latex/contrib/xsim/code/xsim.solutions.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.solutions.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.sty b/macros/latex/contrib/xsim/code/xsim.sty
index f5efe12408..a6a5538c67 100644
--- a/macros/latex/contrib/xsim/code/xsim.sty
+++ b/macros/latex/contrib/xsim/code/xsim.sty
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -29,9 +29,9 @@
 
 \ExplSyntaxOn
 
-\tl_const:Nn \c_xsim_date_tl                 {2019/11/10}
+\tl_const:Nn \c_xsim_date_tl                 {2020/01/16}
 \tl_const:Nn \c_xsim_version_major_number_tl {0}
-\tl_const:Nn \c_xsim_version_minor_number_tl {16}
+\tl_const:Nn \c_xsim_version_minor_number_tl {16a}
 \tl_const:Nn \c_xsim_version_subrelease_tl   {}
 \tl_const:Nx \c_xsim_version_number_tl
   {
@@ -75,13 +75,6 @@
 
 \ProcessKeysPackageOptions {xsim/package}
 
-\prg_new_conditional:Npnn \xsim_if_write_to_files: {p,T,F,TF}
-  {
-    \bool_if:NTF \g__xsim_write_to_file_bool
-      { \prg_return_true: }
-      { \prg_return_false: }
-  }
-
 % --------------------------------------------------------------------------
 
 % messages:
diff --git a/macros/latex/contrib/xsim/code/xsim.style.layouts.code.tex b/macros/latex/contrib/xsim/code/xsim.style.layouts.code.tex
index 756a61e838..11ab475b2a 100644
--- a/macros/latex/contrib/xsim/code/xsim.style.layouts.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.style.layouts.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.tags.code.tex b/macros/latex/contrib/xsim/code/xsim.tags.code.tex
index e63174a0cc..f97c1af889 100644
--- a/macros/latex/contrib/xsim/code/xsim.tags.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.tags.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.templates.code.tex b/macros/latex/contrib/xsim/code/xsim.templates.code.tex
index c5c08b8d9b..7644074be7 100644
--- a/macros/latex/contrib/xsim/code/xsim.templates.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.templates.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.translations.code.tex b/macros/latex/contrib/xsim/code/xsim.translations.code.tex
index f818c8d5ff..b9f0712b4b 100644
--- a/macros/latex/contrib/xsim/code/xsim.translations.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.translations.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsim.verbwrite.code.tex b/macros/latex/contrib/xsim/code/xsim.verbwrite.code.tex
index bc9b2ce096..5d87f7c750 100644
--- a/macros/latex/contrib/xsim/code/xsim.verbwrite.code.tex
+++ b/macros/latex/contrib/xsim/code/xsim.verbwrite.code.tex
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/code/xsimverb.sty b/macros/latex/contrib/xsim/code/xsimverb.sty
index 4046415277..a7cbd0706b 100644
--- a/macros/latex/contrib/xsim/code/xsimverb.sty
+++ b/macros/latex/contrib/xsim/code/xsimverb.sty
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -26,14 +26,13 @@
 % feel free to contact me.
 % ----------------------------------------------------------------------------
 
-\@ifpackageloaded{xsim}{\endinput}{}
-\RequirePackage {expl3,xparse}
+\RequirePackage {expl3}
 \ExplSyntaxOn
 
-\tl_const:Nn \c_xsimverb_date_tl                 {2017/03/19}
+\tl_const:Nn \c_xsimverb_date_tl                 {2019/12/29}
 \tl_const:Nn \c_xsimverb_version_major_number_tl {0}
 \tl_const:Nn \c_xsimverb_version_minor_number_tl {1}
-\tl_const:Nn \c_xsimverb_version_subrelease_tl   {}
+\tl_const:Nn \c_xsimverb_version_subrelease_tl   {a}
 \tl_const:Nx \c_xsimverb_version_number_tl
   {
     \c_xsimverb_version_major_number_tl .
@@ -44,7 +43,7 @@
     \c_xsimverb_version_number_tl
     \c_xsimverb_version_subrelease_tl
   }
-\tl_const:Nn \c_xsimverb_info_tl {write environments verbatim to files}
+\tl_const:Nn \c_xsimverb_info_tl {write~ environments~ verbatim~ to~ files}
 
 \ProvidesExplPackage
   {xsimverb}
@@ -52,29 +51,33 @@
   {\c_xsimverb_version_tl}
   {\c_xsimverb_info_tl}
 
-% options, information
+\@ifpackageloaded {xsim} { \file_input_stop: } {}
+\RequirePackage {xparse,l3keys2e}
 
-\bool_new:N \g_xsim_final_bool
-\bool_new:N \g_xsim_verbose_bool
-\bool_new:N \g_xsim_clear_aux_bool
+% options, information
 
-\keys_define:nn {xsim}
+\cs_new_protected:Npn \xsimverb_bool_provide:N #1
+  { \bool_if_exist:NF #1 { \bool_new:N #1 } }
+  
+\xsimverb_bool_provide:N \g_xsim_final_bool
+\xsimverb_bool_provide:N \g_xsim_verbose_bool
+\xsimverb_bool_provide:N \g_xsim_clear_aux_bool
+\xsimverb_bool_provide:N \g__xsim_write_to_file_bool
+\xsimverb_bool_provide:N \g_xsim_use_aux_bool
+\xsimverb_bool_provide:N \g__xsim_rerun_bool
+
+\keys_define:nn {xsimverb}
   {
-    final .bool_gset:N = \g_xsim_final_bool ,
-    verbose .bool_gset:N = \g_xsim_verbose_bool ,
-    clear-aux .bool_gset:N = \g_xsim_clear_aux_bool
+    final     .bool_gset:N         = \g_xsim_final_bool ,
+    verbose   .bool_gset:N         = \g_xsim_verbose_bool ,
+    clear-aux .bool_gset:N         = \g_xsim_clear_aux_bool ,
+    no-files  .bool_gset_inverse:N = \g__xsim_write_to_file_bool ,
+    no-files  .initial:n           = false ,
+    use-aux   .bool_gset:N         = \g_xsim_use_aux_bool ,
+    use-aux   .initial:n           = false
   }
 
-\DeclareOption {final}
-  { \bool_gset_true:N \g_xsim_final_bool }
-
-\DeclareOption {verbose}
-  { \bool_gset_true:N \g_xsim_verbose_bool }
-
-\DeclareOption {clear-aux}
-  { \bool_gset_true:N \g_xsim_clear_aux_bool }
-
-\ProcessOptions \scan_stop:
+\ProcessKeysPackageOptions {xsimverb}
 
 % --------------------------------------------------------------------------
 
@@ -91,3 +94,4 @@
 
 2018/01/31 - define xsim's options as dummy options to prevent possible errors
              caused by undefined booleans
+2019/12/29 - adapt to update of xsim
diff --git a/macros/latex/contrib/xsim/doc/xsim-manual.cls b/macros/latex/contrib/xsim/doc/xsim-manual.cls
index 3667dd11c6..6e1359c0b1 100644
--- a/macros/latex/contrib/xsim/doc/xsim-manual.cls
+++ b/macros/latex/contrib/xsim/doc/xsim-manual.cls
@@ -8,7 +8,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -29,12 +29,12 @@
 % please ignore the contents of this file -- it is not a good example for
 % coding...
 %
-\ProvidesClass{xsim-manual}[2019/11/10]
+\ProvidesClass{xsim-manual}[2019/12/29]
 
 \LoadClass[load-preamble,add-index]{cnltx-doc}
 \RequirePackage{imakeidx}
 \RequirePackage[utf8]{inputenc}
-\RequirePackage{xsim}
+\RequirePackage{xsim,xsimverb}
 
 \RequirePackage{geometry}
 \geometry{
@@ -259,6 +259,17 @@
 \newnote*\sincechanged[2]{\GetTranslation{cnltx-introduced}~#1
   (\csuse{xsimversion#1}), changed with version~#2 (\csuse{xsimversion#2})}
 
+\RequirePackage{xsimverb}
+\ExplSyntaxOn
+\tl_replace_all:Nnn \c_xsimverb_date_tl {/} {-}
+\ExplSyntaxOff
+
+\newnote*\xsimverbversion{%
+  \pkg{xsimverb} version~\csname c_xsimverb_version_tl\endcsname\
+  (\expandafter\expandafter\expandafter\DTMdate
+   \expandafter\expandafter\expandafter{\csname c_xsimverb_date_tl\endcsname})%
+}
+
 \renewcommand*\versionnoteformat{\scriptsize\sffamily\RaggedRight}
 
 \renewcommand*\cnltx@module@text[2]{%
diff --git a/macros/latex/contrib/xsim/doc/xsim.history b/macros/latex/contrib/xsim/doc/xsim.history
index c3214cf573..b2bf16e4c0 100644
--- a/macros/latex/contrib/xsim/doc/xsim.history
+++ b/macros/latex/contrib/xsim/doc/xsim.history
@@ -7,7 +7,7 @@ Clemens Niederberger
 Web:    https://github.com/cgnieder/xsim
 E-Mail: contact@mychemistry.eu
 --------------------------------------------------------------------------
-Copyright 2017--2019 Clemens Niederberger
+Copyright 2017--2020 Clemens Niederberger
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either version 1.3
@@ -133,4 +133,6 @@ HISTORY:
                      `use-aux'
  v0.16  2019/11/10 - fix issue due to usage of own auxiliary file
                    - \XSIMatbegindocument and \XSIMatenddocument
-                   - \xprintexercise, \xprintsolution, \xsimprint, \xsimxprint
+		   - \xprintexercise, \xprintsolution, \xsimprint, \xsimxprint
+        2019/12/29 - bugfix in `xsimverb'
+ v0.16a 2020/01/16 - adapt to renaming of string case changing functions
diff --git a/macros/latex/contrib/xsim/doc/xsim.ideas b/macros/latex/contrib/xsim/doc/xsim.ideas
index cdc4b7d2ba..0882c70535 100644
--- a/macros/latex/contrib/xsim/doc/xsim.ideas
+++ b/macros/latex/contrib/xsim/doc/xsim.ideas
@@ -7,7 +7,7 @@ Clemens Niederberger
 Web:    https://github.com/cgnieder/xsim
 E-Mail: contact@mychemistry.eu
 --------------------------------------------------------------------------
-Copyright 2017--2019 Clemens Niederberger
+Copyright 2017--2020 Clemens Niederberger
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either version 1.3
diff --git a/macros/latex/contrib/xsim/doc/xsim_manual.pdf b/macros/latex/contrib/xsim/doc/xsim_manual.pdf
index 72711292c5..9c3f546204 100644
--- a/macros/latex/contrib/xsim/doc/xsim_manual.pdf
+++ b/macros/latex/contrib/xsim/doc/xsim_manual.pdf
diff --git a/macros/latex/contrib/xsim/doc/xsim_manual.tex b/macros/latex/contrib/xsim/doc/xsim_manual.tex
index 5156221b0e..46706662a1 100644
--- a/macros/latex/contrib/xsim/doc/xsim_manual.tex
+++ b/macros/latex/contrib/xsim/doc/xsim_manual.tex
@@ -13,7 +13,7 @@
 % Web:    https://github.com/cgnieder/xsim
 % E-Mail: contact@mychemistry.eu
 % ----------------------------------------------------------------------------
-% Copyright 2017--2019 Clemens Niederberger
+% Copyright 2017--2020 Clemens Niederberger
 % 
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either version 1.3
@@ -2274,10 +2274,11 @@ For this manual we then get the following list\footnote{Taking care of the
   }
     
 \section{The \pkg*{xsimverb} package}\label{sec:xsimverb-package}
-\xsim\ comes bundled with another package called \pkg{xsimverb}.  This package
-loads a very small subset of \xsim\ which allows to create environments which
-write their contents verbatim to external files.  It provides the following
-commands (which of course are also available in \xsim, too):
+\xsim\ comes bundled with another package called
+\pkg{xsimverb}\xsimverbversion.  This package loads a very small subset of
+\xsim\ which allows to create environments that write their contents verbatim
+to external files.  It provides the following commands (which of course are
+also available in \xsim, too):
 
 \begin{commands}
   \command{XSIMfilewritestart}[\sarg\marg{file name}]
@@ -2309,7 +2310,7 @@ commands (which of course are also available in \xsim, too):
     value is~$0$.
 \end{commands}
 
-An example of how to use those commands:
+The following code shows an example of how to use those commands:
 \begin{sourcecode}
   \documentclass{article}
   \usepackage{xsimverb,listings}