21.3.21:
- Added another checking fase before edit and improve the layer to edit
decorator and related processes
- Improve and small refactor of the edition process, rising the performance
around 15 percent for editions with lines and polygons
- Apply symbology to raster layer using only Paletted/Unique values, fixing
problems like layers with 0 that user want to edit
- Restore the original symbology when the plugin unset the nodata value
- Several UI improvements and tweaks
- All commits in: https://github.com/SMByC/ThRasE/commits