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History of the luamplib package
+2024/08/03 2.34.5
+ * provide 'withgroupbbox' macro for transparency group to enable users to
+ control the bounding box
+
+ * write down the width/height/depth values of mplibgroup to the log file
+
+2024/07/31 2.34.4
+ * 'withpattern' operator accepts a <textual picture> as well as a <path>
+ for its operand. Thus users can give pattern effect to the result of btex
+ command or infont operator.
+
+ * fix regarding line width in mplibgraphictext
+
+2024/07/27 2.34.3
+ * in DVI mode, use LaTeX's shipout hooks to generate new XObjects
+ or to put resources to pageresources. (in plain, load atbegshi.sty)
+
+ * fix shading to allow the even-odd rule
+
+2024/07/24 2.34.2
+ * With the newly introduced macros, \mplibgroup ... \endmplibgroup, users
+ can define a transparency group or a normal form XObject from TeX side.
+ The LaTeX environment 'mplibgroup' is identical to this pair of macros.
+ See the document for details.
+
+ * document: be more precise about the color effect of a transparency group
+
+ * remove trailing zeros from numeric objects to get smaller PDF
+
+2024/07/19 2.34.1
+ * transparency group is available with plain format as well.
+ * transparency group once used is reusable in the TeX code or
+ in other MetaPost code chunks. see the document for details.
+
+2024/07/17 2.34.0
+ * support transparency group with metafun format
+ * fix regarding default value in circular fading mode
+ * fix regarging the scope of graphics state
+
+2024/07/14 2.33.1
+ * refactor the manual, including some minor items undocumented so far
+ * improve fading routine to get possibly smaller pdf file
+
+2024/07/08 2.33.0
+ * provide a new metapost operator 'withfademethod' and related macros,
+ which make the color of an object gradiently transparent. see luamplib
+ document for details.
+
+ * fix spot-color shading routine to support user-defined colorspace
+
+2024/07/03 2.32.4
+ * make the variable 'patterns' local
+ * 'math.randomseed' on plain TeX
+ * remove redundant code 'fullcircle scaled 0'
+
2024/06/21 2.32.3
* 'coloured' is a synonym of the option 'colored' in pattern definition.