Fixed issue #30

 (Exception in case of non-quadratic pixels of the input images). Updated version info.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

Bugfix/fix etrs projection incompatibility

Closes #27

See merge request !1

Moved cmocean to conda requirements due to setup issue under Python 2.7. Removed '-y -q' from conda install commands contained in installation instructions in README files.

Replaced 'importlib.util.find_spec' with 'pkgutil.find_loader' to ensure Python 2.7 compatibility. Updated minimal version of geoarray.

Fixed issue # 17 (Coregistration sometimes fails in case of floating point coordinates of the input images.)

Fixed issue #23 ('TypeError in case COREG or COREG_LOCAL is called with an in-memory reference or target image and path_out is set to 'auto'.').

CI setup now updates ci_env environment installed via docker_pyenvs instead of creating an independent environment.

CI Python environment is not separate from the base env. Fixed mixed channels for gdal and libgdal causing libkea issue during CI.