When two loops have assignments to the same symbol with different
rhs and both are pulled before the loops, one of them is now renamed.
Previously one of them was left inside the loop.

Fixes #27

This restructuring allows for easier separation of modules into
separate repositories later. Also, now pip install with repo url can be
used.

The setup.py files have also been updated to correctly reference each
other. Module versions are not extracted from git state