Started work on new symmetric behavior (commented out)
Fixes to force term resulting in much better energy conservation
Fixed bug in twoparticleforce headCorrectionEnergy correction
Shortened variable names
Set only processor 0 to print during simulation
Cleaned out comments and set up distance check in FannThreeParticleForce
Only calculating three particle force for one three-particle config
Changed TwoParticleForce tail correction to damping. Set upper to cutoff
Added damping at lower limit for FannThreeParticleForce as well
Updated tests
Removed lower limit for FannThreeParticleForce, changed upper. Better!
Changed sign of headCorrectionForce and removed angle correction