Changed the way shearing is iterated. Now went back to Lees-Edwards conditions, but for both particle species independently. In order to account for more or less even conditions, the faster of the two is periodically set back one whole unit of distance.
changed a little in the ways shearing is calculated, now it is done correctly and coherently

Conflicts:
	Code/Simulation/simulation.c
checking .gitignore
checking .gitignore
altered graphic output a little, now also does psi4 and psi6 analysis
changed some minor things