- Major optimization of the put_atom_in_box() function.
- Major optimization of the protein_precheck() function.
- Minor optimization in radial_volume_desolvation()
- Optimization in top_up() to scale for large structures.
* 'python setup.py install' will install
- a package 'propka' (which contains everything that 'Source' contained
in the original distribution)
- an executable script 'propka31' (which is identical to the original
'propka.py' script but it is automatically generated via the setuptools
mechanism; it uses propka.run.main().
* 'pip install' will also work
* the README.md file was changed to reflect the alterations
* metadata in the setup.py file was added
NOTE: The licence is still unclear!
