The documentation files should be updated to use Markdown. This involves renaming them to use the .md file extension, but also converting the previoous Trac wiki markup.
However, see also #2 --- don't go and blindly convert things. Start with RepyV1/2 docs+tutorial, clearinghouse, custom installer builder docs. Then proceed to the other things.
Any help is appreciated! Just add your GiHub handle and the page you will be converting as a comment below.
You can use the tractomd.py-script for some limited automatic conversion!