* runtime: cosmetic: prnounce file reference data
* runtime: explain why we may access the card object directly
* runtime: do not use the _scc object of the card object to select MF
* Fix various mistakes around the CardADF <-> CardApplication dualism
* filesystem: fix various issues found by mypy
* filesystem: Avoid GPL header showing up in sphinx autodoc
* Use sphinx for generating documentation
* Add more documentation to the classes/methods