Changes

Changes from Mercurial (hg https://foss.heptapod.net/isa-afp/afp-devel/ default)

Changeset 13907:d9d71f72ce4e by desharna: added missing file following 2702f2046afa
The file was added	`thys/VeriComp/Lifting_Simulation_To_Bisimulation.thy`