GitLab

* Fresh branch refactoring the new AMOEBA code

* Finish cleaning up AmoebaAngleForce and AmoebaInPlaneAngleForce

* Cleanup AmoebaTorsionTorsionForce

* Cleanup AmoebaOutOfPlaneBend

* Cleanup AmoebaMultipoleForce

* Remove unnecessary gkForce

* Simplify usage of atomClasses in ForceField

* Formatting

* Fix type of class on WCA

* Simplify angle forces

* Add parsing of units to PiTorsion and StretchBond, and misc. formatting adjustments

* Update code per review feedback

* Clearly defined API for TorsionTorsion,  and correct matching for UB,

* Unindent break statements

* Raise ValueError if classes and types are mixed in a Urey-Bradley term definition