Use versioneer for version info

The MR would change the names of MAICoS versions is the following way:

• Releases are unchanged [0.6]
• dev versions have the commits count since release and the current commit added [{tag}.dev{ccount} i.e. [0.6.dev12-qwei234]
• dev versions with untracked files additionally get the dirty tag i.e. [0.6.dev12-qwei234+dirty]

This could lead to easier debugging in the development team.

TODO

• Add information about versioning in docs