pst2pdf.pl --------
0.18  2017-10-04  - fix typos in the code comments
0.17  2017-09-11  - fix escape character in regex
0.16  2014-09-14  - using gs for split pdf (no more pdftk)
                  - support package pst-exa for examples
		  - adding svg image support
		  - ignore inline verbatim 
0.15  2013-06-16  - adding short options for command line
                  - create png and jpg files in Linux and Windows
		  - pass options to ps2pdf
0.14  2013-02-27  - suport xelatex and -help from command line
0.13  2011-12-12  - some more improvements to the code
0.12  2011-01-19  - new optional arguments for running
                    bibtex or biber
0.11  2010-10-03  - use graphicspath instead of $imageDir to
                    allow working with Windows
                  - test for pst-exa to write \psset in the
                    pdf file
0.10  2010-01-04  - allow using the package pst-exa
0.09  2009-10-01  - allow pspicture*
0.08  2009-08-28  - test for png files (only for Linux)
0.07  2009-07-24  - fix bug with \begin{postscript} and following
                    pspicture environment
                  - add some more documentation
0.06  2007-08-28  - fix bug with \begin{pspicture} and \pspicture
0.05  2007-07-05  - allow different extensions for the source file
                    e.g. tex, ltx
		  - ignore verbatim environment
		  - better log file support
0.04  2007-07-04  - allow all \begin ..\end sequences anywhere 
                    in a line, see testcase 
0.03  2007-06-21  - fix nested environments 
0.02  2007-06-20  - first (public) version