Merge branch 'release/0.0.5' into develop
Add conftest.py to ignore top-level stuff
Move tests to top-level
Add options to pytest
Fix numpy import dependency
Merge branch 'master' into develop
Still learning Python packaging
Ensure float64 dtype in arguments
Add Makefile
Recompile .pyx
Bump version
Rebuild
Add 'Contributing' section
Merge branch 'release/0.0.6'