GitLab

Refactored ForceImpl, lots of KernelImpl subclasses, and other related classes to avoid redundant calculations when requesting a State with both forces and energies

  sqrt of an integer is ambiguous
  methods declared to return a value must return a value

Moved SFMT into libraries folder, and restructured it to allow multiple independent random number generators

All platforms now handle nonbonded exceptions in a consistent way (they ignore cutoffs and periodic boundary conditions).  Also started OpenCL implementation of CustomHbondForce.