removed all prints, starting next part (the actual algorithm)
minor TODO changes
moved inertia member from Swarm to PSO
it is conceptually better to have inertia as member of Swarm, but it is
much easier to mantain, uptade and broadcast it as a member of PSO
repaired something deprecated in PSO
added setParticle to Swarm
implemented majority of the PSO algorithm and communication
printouts in PSO