Migrating to GitHub

We've wanted to do this for ages. If you go back far enough, you can 
find Jim confidently asserting we'd use GitHub for 2.7.2 
(https://sourceforge.net/p/jython/mailman/jython-dev/thread/CAOhO%3DaO_4GruQXQqmZk39a0C%3DXUnKyj%3DG6OcQtBkhtoQm9BCjw%40mail.gmail.com/#msg35054683).

Building with Gradle and accessing dependencies remotely (no JARs 
checked in) were identified as prerequisites at the time. In turn, I 
think building with Gradle requires re-organising the code to fit with 
its /convention over configuration/ idea 
(https://docs.gradle.org/current/userguide/organizing_gradle_projects.html#sec:use_standard_conventions). 
At least, doing otherwise in 2.7.2 got too difficult for me, somewhere 
around exposed classes ISTR.

These don't seem to be prerequisites for the move. I would do Jython 3 
that way, but leave 2.7.3 as it is.

https://bugs.jython.org/issue2892 opened to cover this. I'll try, 
starting withthe obvious way 
(https://help.github.com/en/github/importing-your-projects-to-github/importing-a-repository-with-github-importer) 
and reading what CPython did. I'd be happy to take input from anyone 
with a sure-fire answer.

-- 
Jeff Allen