Fixed an unhelpful error message in case no coregistration point can be placed within an image area usable for coregistration due to the provided bad data mask. Fixes #38 (closed).
Fixed some wrong type hints.
Added COREG_LOCAL.calculate_spatial_shifts() allowing to explicitly compute the shifts instead of implicitly running the getter properties. This improves API clarity and facilitates debugging.
Added sphinx-autodoc-typehints to doc requirements.