Began creating CPU version of CustomGBForce
More optimizations to CPU CustomGBForce
Eliminated some unnecessary memory allocation
Further optimizations to CustomGBForce
Parallelized CpuCustomGBForce
Very minor optimization to CpuCustomGBForce
More optimizations to CpuCustomGBForce
Merge pull request #644 from peastman/cpugb

Created CPU implementation of CustomGBForce