v2.0.0

Major structure changes:

• PhaseSpace become a dataset, and plot, hist and stat are folder containing methods
• PhaseSpace attribute extract have been replaced by load, save, edit and read
• PhaseSpace attribute export have been replaced by save, edit and read
• PhaseSpace attribute data have been replaced by edit and read
• PhaseSpace attribute data.raw have been replaced read
• New PhaseSpace attribute metadata containing informations about labels, units and specie.

New features:

• Prototypes of ScalarField and EventLocation datasets
• Particle merging algorithm
• Some tests

Documentation:

• The word "configuration" have been replaced by "macro-particle", or simply "particle"