Coordinated METplus Version 2.1

Release notes are followed by the GitHub issue number which describes the bugfix:

https://github.com/NCAR/MET/milestone/60?closed=1

Bugfixes Included:

• Fix MET to correctly handle the updated "V8.1.1" version number (#1153).
• Interpret the NetCDF COARDS convention as being CF-compliant (#1155).
• Update list of GRIB2 vertical level types (#1159).
• Fix to handle GRIB2 PDS Template number 46 (#1160).
• Bugfix for memory leak in vx_data2d_grib2 library (#1157).
• Bugfix for uninitialized variables in pb2nc and regrid_data_plane (#1156).
• Bugfix for swapped lat/lon dimensions in regrid_data_plane GOES-16 output (#1152).
• Bugfix for time slicing of NetCDF files (#1147).
• Bugfix for segfault in Grid-Stat when reading climo_mean data (#1146).
• Bugfix for header array index when computing time summaries in PB2NC (#1137).
• Bugfix for ALPHA=NA in the GRAD output line type from Grid-Stat (#1131).
• Bugfix for the OBJECT_ID column in the 2D ASCII output files from MTD (#1128).
• Fix compilation problems for GNU 6.3.0 and later versions (#1139).
• Minor corrections to the user's guide (#1150).