...rather than reading input layers directly through GDAL.
Benefits include more robust handling of nodata/data type conversions,
less code duplication, also being able to take advantage of features
in QGIS raster code like handling gain/offset in rasters. (fix#12450)
Also, add a choice of output projection to the raster calculator.
Previously the output CRS would be taken from the first raster, with
no guarantees that the output extent matched the output CRS. This
resulted in empty/misplaced rasters. (fix#3649)
...for more accurate calculations (fix#9081)
Also:
- Add test suite for raster calculator
- Fix errors with log/log10 calculation and inputs <= 0
- Fix loss of nodata values in certain circumstances
* GDALGetGeoTransform failures can be ignored (partly reverts 0080f9e)
* handle quoted raster references
* don't complain if the output file is not yet set
- update methods of existing classes
- add comment to methods missing in the sip bindings
- split up collective sip files into single files and use
same directory structure in python/ as in src/
- add a lot of missing classes (some might not make sense because of
missing python methods in those classes)
- remove some non-existing methods from the header files
- add scripts/sipdiff
- replace some usages of std::vector and std::set with QVector/QSet
