Enhancement/minor fixes
- Fixed a bug which causes COREG.equalize_pixGrids() to run although the pixel grids of reference and target image are equal.
- Fixed ResourceWarning in COREG.show_matchWin() as well as in COREG.calculate_spatial_shifts().
- Fixed exception in COREG.view_CoRegPoints_folium() in case of a recent version of folium.
- Added tolerances to the window position validation to avoid float precision issues.
- Updated minimal version of geoarray.
Fixes issue #17 (closed).