CDO

New features:

• select, delete: added wildcard support for parameter name
• expr: added support for logical operators <, >, <=, >=, !=, ==, <=>

New operators:

• splityearmon: Split in years and months
• yseasadd: Add multi-year seasonal time series
• yseassub: Subtract multi-year seasonal time series
• yseasmul: Multiply multi-year seasonal time series
• yseasdiv: Divide multi-year seasonal time series

Changed operators:

• vertmean, vertavg: changed to weighted means if layer bounds are available
• setpartabp, setpartabn: added optional parameter convert to convert the units.
  Units are not converted anymore if this parameter is not set!
• TimSTAT, Timpctl, TimselSTAT, Timselpctl, SeasSTAT, Seaspctl:
  The output time stamp of all operators from the above modules are changed from the last to the middle contributing timestep.
  Use the environment variable CDO_TIMESTAT_DATE=last to set the output time stamp to the last contributing timestep.
• eof, eof3d: use area weights instead of no weights
  Use the environment variable CDO_WEIGHT_MODE=off to switch back to the non weighted version

Fixed bugs:

• gradsdes: grib index file is empty (introduced in 1.6.7)
• grib2 output: segfaults when writing grib2 files [Bug #5351]
• remapnn: Segmentation fault for extrapolation of regular 2D source grids [Bug #5448]