Typo
Update sphinx config
Update copyright date
Update pydoctheme
Minor improvements to the NDVI example
Size parameters in create_compatible_raster are now optional
Improved checks on Raster objects
Use python3 by default
Minor refinements
Use numpy.testing functions
Do not change the sys.path in test modules
Add tests for gh-9 (incorrect offset handling during geolocation grids reading)

The issue is in the C library and has been fixed with commit
bcdev/epr-api@8e42f43249ae68e3755a0f051cf27bc8c8763848.
Skip some tests in buggy versions of EPR C API