0.5.0: Particle tracking

This is version 0.5.0 of openPMD-viewer.

This new version includes the ParticleTracker object, which allows user to track individual particles across different iterations, provided that their id is stored in the openPMD file. Also, starting with this version, openPMD-viewer now depends on Cython.

For more information on how to use the ParticleTracker, see the tutorial notebook.