v1.4.0

Added

• Added function open_stream() that calls the dvdcss_open_stream function of the libdvdcss library.
• Defined dvdcss_stream_cb, pf_seek, pf_read, pf_readv, and dvdcss_open_stream.

Changed

• Various structural and organisational changes to the repository, CI/CD, and more.
• Updated dependencies as far as I could while keeping support for actively supported versions of Python.
• Moved all documentation dependencies from dev to main group as optionals installed through the docs extra.

Removed

• Dropped support for Python 3.5, 3.6, and 3.7. This is to have support for the latest dependency versions.
• Removed all uses of poetry-dynamic-versioning as it's simply unnecessary.