GeoscienceAustralia/Wind_multipliers: Version 3.0

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