GitLab

Python 3 does not have dict.itervalues

Really we should move to using six and importing the iterator versions of dict
methods and range/zip from there, but for now just use "values" since using a
raw list doesn't seem like it will cause memory or performance problems here.

Rewrite run-ctest.py

Fix travis following migration to legacy precise infrastructure.

PDBFile - change behavior of connectivity to metals to that of PDBxFile

Change functions in `customgbforces.py` to subclasses

New Sphinx API Docs

[CI] Use ccache

Minor optimization

Bug fixes

Added serialization proxy for CustomCentroidBondForce

Update CustomHbondForce.h

Add OpenCL to Appveyor and fix nosetests