Update notes for submitted changes

* 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

1e/45657e0f177388379f37e8557ac1cfdbac32a5

@@ -0,0 +1,7 @@
+Verified+1: Jenkins Builder
+Code-Review+2: laforge <laforge@osmocom.org>
+Submitted-by: laforge <laforge@osmocom.org>
+Submitted-at: Fri, 02 Apr 2021 20:15:45 +0000
+Reviewed-on: https://gerrit.osmocom.org/c/pysim/+/23581
+Project: pysim
+Branch: refs/heads/master

5a/4fd529869573f20b88157333872d39da56bd45

@@ -0,0 +1,7 @@
+Verified+1: Jenkins Builder
+Code-Review+2: laforge <laforge@osmocom.org>
+Submitted-by: laforge <laforge@osmocom.org>
+Submitted-at: Fri, 02 Apr 2021 20:15:45 +0000
+Reviewed-on: https://gerrit.osmocom.org/c/pysim/+/23579
+Project: pysim
+Branch: refs/heads/master

5c/e3524f5f7a39021e8bef7c3cf521dae2484170

@@ -0,0 +1,7 @@
+Code-Review+2: laforge <laforge@osmocom.org>
+Verified+1: Jenkins Builder
+Submitted-by: laforge <laforge@osmocom.org>
+Submitted-at: Fri, 02 Apr 2021 20:15:45 +0000
+Reviewed-on: https://gerrit.osmocom.org/c/pysim/+/23582
+Project: pysim
+Branch: refs/heads/master