* Refactored the BCF dir into a "src-layout" which I am more comfortable with. We can likely change this back if it is not compatible with other development
* I added a few setup files for the bcf package (setup.cfg, pyproject.toml and a MANIFEST.in file)
* Added two __init__.py files in the v2 and v3 subfolders for them to be picked up during package compilation
krande