Initial particle filter, with just particle class, nothing really yet
Plot the particles in 3D
Adding Particle Filter normalization and resampling
Remove println
Implement a distance measurement and move action

Using the probability density function of the normal distribution, the
weights are updated depending on the distance of the particle and the
measured distance.

For a move action, all particles move a certain distance in a certain
angle. This distance however also has a distribution.
Multiplying the new distribution with the prior probability model
Add achartengine to display some scatter plots
Merge branch 'particle-filter' Fixes #10