Log Message:
devel/py-flit: Import py-flit 3.0.0

Python and PyPI packaging tool.  Core library and bootstrapping goo
imported as devel/py-flit_core at the same time.  From the README:

   Flit is a simple way to put Python packages and modules on PyPI.

   It tries to require less thought about packaging and help you avoid
   common mistakes.