Move everything into a subdirectory and add a basic setup.py.
Rename curveship.py to not conflict with package name
Start renaming imports.  Remove action_model.py
Rename
Revert "Start renaming imports.  Remove action_model.py"

This reverts commit 4d1f8951953ae7e40bddf11f13a19377c5093c9a.
Rename action_model import
More import fixups