Ocfl-py

* Use `main` as default branch in git repository, fix links and documentation

* Add table of implementation status (https://github.com/zimeon/ocfl-py/blob/main/docs/validation_status.md)

* Add checks for paths in manifest (https://ocfl.io/1.0/spec/#E098, https://ocfl.io/1.0/spec/#E099, https://ocfl.io/1.0/spec/#E100, https://ocfl.io/1.0/spec/#E101)
* Separate message not a string test (https://ocfl.io/1.0/spec/#E094) from others
* Sort out version sequence tests (https://ocfl.io/1.0/spec/#E008, https://ocfl.io/1.0/spec/#E009, https://ocfl.io/1.0/spec/#E010, https://ocfl.io/1.0/spec/#E011)
* Refine checks for logical paths (https://ocfl.io/1.0/spec/#E052, https://ocfl.io/1.0/spec/#E053)
* Fix code for missing sidecar (https://ocfl.io/1.0/spec/#E058)
* Add --version for ocfl-sidecar.py

- Initial basic prototype.


ocfl-py changelog

* Add checks for paths in manifest (https://ocfl.io/1.0/spec/#E098, https://ocfl.io/1.0/spec/#E099, https://ocfl.io/1.0/spec/#E100, https://ocfl.io/1.0/spec/#E101)
* Separate message not a string test (https://ocfl.io/1.0/spec/#E094) from others
* Sort out version sequence tests (https://ocfl.io/1.0/spec/#E008, https://ocfl.io/1.0/spec/#E009, https://ocfl.io/1.0/spec/#E010, https://ocfl.io/1.0/spec/#E011)
* Refine checks for logical paths (https://ocfl.io/1.0/spec/#E052, https://ocfl.io/1.0/spec/#E053)
* Fix code for missing sidecar (https://ocfl.io/1.0/spec/#E058)
* Add ocfl-sidecar.py script to generate inventory sidecar