Improved ADP calculation. Now ADP are calculated respect to the equilibrium positions in the MD.
The average positions are calculate taking in account the translation crystal symmetry.
Changed the normalization of the total power of the power spectra. Now the total power corresponds to the vibrational kinetic energy.
Minor changes in the API.
Minor changes in the DynaPhoPy script (user interface):
load_velocity -> load_data
save_velocity -> save_data
Other minor changes