Accelerate beams
Merge branch 'master' into acceleration

Conflicts:
	Beam.pde
	BeamType.java
	DownwardsBeam.pde
	LeftwardsBeam.pde
	RightwardsBeam.pde
	UpwardsBeam.pde
Set sensible acceleration values
Set beams' initial velocity
Set beams' terminal velocity
Fine-tune beams' terminal velocity
Do not truncate beam position values
Merge pull request #23 from adjl/acceleration

Acceleration