- put declarations inside a structure (NominalPermeq)
- dynamic_thm(s) now looks up theorems in theory
associated with proof state (rather than in context
associated with simpset)
- finite_guess_tac now automatically adds some extra
rules about supp to the simpset
- nominal_permeq.ML is now loaded before nominal_package.ML
- methods and tactics in nominal_permeq.ML are now defined
inside structure NominalPermeq, therefore the names
in the method_setup section had to be changed