Initial conditions for Weibel instability added.
Merge pull request #89 from aipp/file

Specify color of particles and PoissonSolver in YAML file
The Weibel initial conitions are now changed such that the particles are initialized according to a Gaussian distribution. The instability is not yet resolved!
Merge branch from the origin to Daniil's local master.
Parameter adjusted such that the Weibel instability became observable. Wave test is work in progress.
Speed of light is now fixed to sqrt(eps0*mu0), in order to avoid inconsistency.
Error message for wrongly set speed of light added.
Bugs in CloudInCell.java, which sometimes caused runtime ArrayIndexOutOfBound errors, are fixed.
Merge pull request #90 from dgelfand/master

Weibel instability and wave test added.
Remove speed of light from input files.

Changing speed of light only makes sense in combination
with epsilon_0 and mu_0.
Modify particle streams by random components.

Streams can be modified by equally distributed random numbers in a range
(randomX, randomY, randomVx, randomVy)
or by Gaussian random distributions
(randomGaussX, -randomGaussY, -randomGaussVx, -randomGaussVy)