[Chicken-users] Back from the dead: pstk

[ipcore]

Hello,

As promised, I've ported the pstk egg to Chicken 5, and would like to 
take over as maintainer.

https://github.com/utz82/pstk
https://raw.githubusercontent.com/utz82/pstk/master/pstk.release-info

License has been reverted to BSD 2-clause, as the main source actually 
never was in the public domain.

I threw out the SVN backlog when importing to git, so maybe the C4 egg 
should continue to use the old SVN repository instead. Otherwise pstk 
should replace Chicken/Tk as the "maintained" Tk egg at this point. I do 
plan on maintaining both 4 and 5 versions, in any case.

Haven't done any changes to the code for now, other than C5 
compatibility tweaks, and setting default tclsh to tclsh8.6. I'm amazed 
that this decade-old code works on C5 pretty much out of the box.

Best wishes,
-Heinz