Bump version to 10.3.0.dev0. Switch to cpptango 10.3.0dev

See merge request !938

This reverts merge request !938

Revert "Merge branch 'bump-new-dev' into 'develop'"

See merge request !940

When we cast numpy arrays from python to cpp we did reinterpret_cast<const unsigned long *>(arr.shape()). This fails in Windows, due to Py_ssize_t in Windows is long long, so we had dim_x always 0.

When running Windows tests print failed to .\tests\failed_tests.txt and then run script, which fails if file is not empty

Exclude test_databaseds from Windows tests

CI: make Windows CI fail when tests fail

Closes #730

See merge request !939

pybind11 bindings: fix image casting in Windows, 64-bit

Closes #731

See merge request !941

Updates docs and bump version for 10.1.1 release

See merge request !943