Changes from Mercurial (hg https://foss.heptapod.net/isa-afp/afp-devel/ default)
Summary
- merged
- merged
- adapted to current Isabelle/ec1c0daa3fbd;
- adapted to current Isabelle/ec1c0daa3fbd;
- adapted to Isabelle/5edd5b12017d;
- proper morphism context;
- backout a8e9b33d75e1, thanks to Isabelle/f0aca0506531;
- proper morphism context;
- adapted to Isabelle/5ab5add88922;