GitLab

See http://docs.openmm.org/development/api-python/generated/simtk.openmm.mtsintegrator.MTSIntegrator.html#
for the rendered results that are less than ideal.

Also changes a bunch of old-style Python classes to new-style (Py3 only has the
latter)

factors.

Add test for parameterizing system using templates built with the help of getUniqueUnmatchedResidues()