Structure of sources

[robertodr]

Stuff should probably be moved under src, the APIs should go under api. Not sure where the home of the sources in Python should be.

[bast]

As to the placement of sources, the question that I ask myself is: will this mainly be a Python package that people will pip install? If yes, then the source directory should have the same name as the package. Otherwise src/.

[robertodr]

I think we want to do the pip thing. For the moment I'll leave everything as-is.

[bast]

OK we can take this later. I also need to read a bit on the code to understand better.