isabelle update -u control_cartouches;
added HOLogic.mk_obj_eq convenience and eliminated some clones;
additional user-specified simp (naturality) rules used in friend_of_corec
moved ML function
tuned headers;
try tactics in right order w.r.t. schematics
tuning
strengthened tactic
moved 'corec' from ssh://hg@bitbucket.org/jasmin_blanchette/nonprim-corec to Isabelle