Very minor changes in MainBatch and InitialConditions, nothing important.
The normalization of induced currents has been changed in order to achieve independence of time- and gridstep. Seems to work well.
New YAML file added, test initial conditions altered. MainBatch is now starting with the pair test.
The normalization of induced currents has been corrected.
Minor changes, the PhaseSpacePanel is now displaying the first half of particles in the two-stream instability scenario in red and the other half in blue.
Merge pull request #86 from dgelfand/master

Now the normalization of currents should be correct.