use "metis", not "metisFT", to reconstruct proofs found in fully-typed mode -- "metisFT" is just too slow...

beware of polymorphic types in typed translation symbol declarations -- match alpha-equivalent types and, more importantly, prevent unsoundnesses by generating type constraints on the arguments of a polymorphic symbols (otherwise "hAPP" can be given any result type)

minor doc fixes

adapt to new type system names

restructured type systems some more -- the old naming schemes had "argshg diff |less" and "tagshg diff |less" as equivalent and didn't support a monomorphic version of "tags"

take "partial_types" option with a grain of salt

fixed SPASS fact offset calculation and report unexpected unsound proofs with so-called sound encodings

close formula universally, to make SPASS happy

fixed embarrassing bug where conjecture and fact offsets were swapped

pick up GaveUp error on SystemOnTPTP