I am only user, not developer. And it seems to me there is many changes around some pyflakes, travis, test and some other weird stuff, but there are many "minor bugs" (probably easy to solve) in end-user scripts, but nobody is solving them for many months.
I reported many bugs on interwiki.py (which is still used in wiktionary), some of them are about two years old and without solution [1]
There are also old bugs preventing intewiki.py from autonomous run from toolserver [2]
There are also bugs in solve:disambiguation (which is still better in compat), there are enhancement requests for commons.py...
Whot abouy some debug-a-thlon for these script?
JAnD