This is a major upgrade to Python 3.7 and above. Combine the three component multipliers (Ms, Mh and Mt) into a single band, repeated for each wind direction (E, N, NE, NW, S, SE, SW, W). Each band is then stored in a single geotiff file for each tile. mpi_runner.py creates a Virtual Raster Table (VRT) that allows a virtual GDAL dataset to be composed from other datasets. Created dataset dimensions are set by the input dataset dimensions, not fixed Handles the case of an empty input file, but not in an ideal way (replace missing file with values of 1) PyPar replaced by mpi4py TCRM-108: Fixed crash due to fraction indices. TCRM-108: Python version change to 3.7 TCRM-108: Adding test terrain_table data. Update for PEP8 conformance test