Validate spectral homogenization results after changing no-data mask computation algorithm within geoarray.
Since danschef/geoarray@ff68bcb1 (merged into master in danschef/geoarray@584ab3ef (v0.8.2)) pixels that contain the no-data value in not all bands are not treated as 'no-data' anymore. This might affect the spectral homogenization results of gms_preprocessing. Thus, this needs to be validated.
Possible solution: Add an option for enabling a rigorous no-data pixel assignment for these image positions to GeoArray.calc_mask_nodata.