NOTE: two new entries (TLE and SunMoon_model) in simulation parameters XML and schema have been implemented. XML simulation parameters files of older versions have to be updated including the two new entries.
Implemented hardcoded version of gravity field model GGM03C 30x30, Harris-Priester atmospheric model, low precision solar coordinates functions.
Implementation of state transformation from ICRF to ITRF which does not rely on SPICE library but on internal libraries + IGS IGU data (erp files).
Fixed bug in Events.cpp (duration in seconds instead of minutes).
Updated SpOCK user manual.