Ignore __pycache__ directories
Make tests importable, and thus discoverable
Rename to Steel
Ignore traditionally compiled modules as well
Rename to steel in the various source files
Add a setup.py
Remove relative imports
Move base field code out of __init__.py
Remove 'steel.bit' to 'steel.bits' in preparation for a bigger move
Move field base into steel.fields
Remove an import we don't really need
Move strings and numbers into steel.fields
Move field integrity and compression into steel.fields
Change field imports to use steel.fields
Remove the now-unnecessary steel.byte.fields
Move compression over to steel.compression
Move byte base to steel.base
Remove references to steel.byte in tests
Move imports so that `import steel` works properly.
Update tests to use `import steel`