components.CoReg.COREG:
- coreg_info: bugfix for recalculating spatial shifts although they are already there

components.CoReg_local.COREG_LOCAL:
- CoRegPoints_table(): added docstring
- show_image_footprints(): added docstring

components.DeShifter.DESHIFTER:
- bugfix for not properly setting nodata value
- correct_shifts(): bugfix for not passing nodata value when saving GeoArray

components.Geom_Quality_Grid.Geom_Quality_Grid:
- CoRegPoints_table: added docstring
- GCPList: added docstring
- _get_imXY__mapXY_points(): added print output
- get_CoRegPoints_table(): updated progress bar calls
- to_PointShapefile(): reordered keywords; added docstring

- updated __version__