v7.0.0

• major change in .so versioning
• updated variables in vargrib2bufr.csv and improved doc
• convert all station data to real in vol7d_convr if requested (#69)
• more aggressive algorithm for the aggregation of forecasts with time_definition=1 (verification time) (#43)
• add checks for latex and dvips (#57)
• avoid paroblem with second order grib packaging (#66)
• equalize grid coordinates for some sparse point to grid transformations and vice versa
• improve managing of periodicity in in/out grids
• implement full interpretaion of the various "accumulated analyses" grib2 conventions
• Various minor bug fixes
• implement percentile post-transformation
• fix computation of polygon centroid when it's already closed
• add grib2 soil temperature
• fix computation of prevailing wind direction, exclude wind calms
• add global (sw*lw) radiation and corresponding functions
• refactoring removing F2003_FEATURES and legacy sources
• added UV index and grib2 wind gust entries
• cleaned up optionparser (#83)
• fix for reading cosmo grib2 accumulated analyses
• add maskgen:grid transformation
• when start of comp_stat period non specified, force it to be modulo step
• implement full_steps also for time processing by aggregation
• fixed reading error in simc_nc2grib
• add volgrid6d_compute_vert_coord_var subrotuine
  for converting vertical coordinate to a volgrid volume
• add surface lifted index
• added netcdf to grib utility (simc_nc2grib)
• add web bulb temperature function
• add temptative multivariate stat proc