hvextern.sty ----------------
v 0.44  2026-07-04  - support for wolframscript
v 0.43  2026-06-30  - added option png for png images
v 0.42  2025-05-14  - fix for progpath
v 0.41  2024-03-27  - added compiler option=Rscript
                    - fix for Windows and R runs
v 0.40  2024-03-22  - added option mposttex for metapost program which
                      can be tex (default) | latex
v 0.39  2024-01-30  - fixed bug with check for force option
v 0.38  2023-12-08  - change internal macroname \Write@Ex to \hv@Write@EX
v 0.37b 2023-11-22  - fix typo in documentation
v 0.37a 2023-11-20  - fix bug in documentation
v 0.37  2023-08-29  - do not write files without --shell-escape
v 0.36  2023-08-24  - added option "vshift" for inline objects
v 0.35  2023-08-22  - fix shellesc option, don`t set it globally to true
v 0.34  2023-07-05  - fix for missing --shell-escape option
v 0.33  2023-01-29  - fixed bug with vertical space before and end of
 	        	     the example code
v 0.32  2022-06-23  - fixed introduced bug
		           - added checkCode also for pdflatex and xelatex 
v 0.31  2022-06-20  - added package option checkCode to run the external 
                     file only if the code changes.
v 0.30  2022-06-09  - added \hfuzz=\maxdimen for filename to prevent
                     overfull box messages
v 0.29  2022-06-06  - use skin "enhanced jigsaw" for tcolorbox
                   - output  -> showoutput
v 0.28  2022-06-01  - added option output
                   - added macro \defMarkerType for own marker setting
                     (is only a link to the internal macro \hv@extern@ExampleType)
v 0.27  2022-05-27  - suppress overfull warnings for filename output
                   - fix for tcolorbox with minipage and breakable
                   - write filename in tt
                   - added verbose message for force=false
v 0.26 2022-05-23  - set filenames for twocolumn mode outer/inner
                   - added keywords outerFN and shiftFN
v 0.25 2022-05-19  - added framesep keyword
                   - added keywords for vertical space
                   - added keyword textOptions for reading text output
                   - use \hv@marginpar instead of \marginpar/\marginnote
v 0.24 2022-05-11  - fix introduced bug for \hv@rm
                   - added tcolorbox support for \runExtCmd
                   . added keywords pagesep and mpsep
v 0.23 2022-05-08  - added \runExtCmd
                   - added doctype shell
v 0.22 2022-05-05  - added mpvalign, tclbox
v 0.21 2022-04-30  - added java support
v 0.20 2022-04-27  - use L3 for the comma separated lists
                     cleanup and runsequence
                   - move the config files into the main file
v 0.19 2022-04-23  first CTAN version

