Add docs.
Implement fitted AI-EFP exchange-repulsion.
Updates to FF code.
Updates to FF params.
Remove local FF params.
Remove all old force-field related code.
Cleanup after FF removal.
More flexible API for skip-list setup.
Style.
Be more flexible about term selection.
Allow ai-pol term without pol.
Add convenience function for getting fragment coordinates.
Merge branch 'master' of https://github.com/libefp/libefp