* ts_31_102: TLV._tlv must point to the class, not an instance
* filesystem: Fix TLV decode/encode
* Better decode of EF.UST, EF.EST and EF.IST
* utils.py: Fix some tuple type annotations
* utils.py: type annotations for DataObject related methods
* 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