New version: 0.4.0
build: 0.4.0-1
Python 3 bindings added
Add libsolv-devel as a hard requires for hawkey-devel

If you don't do this, then you get an error about -lsolv not being found when
building anything that uses hawkey.
fixed package object rich comparision
spec file also generates python3-hawkey rpm
added support of cost option in repos