Used to be part of Finite_Set (or was it SetInterval?)
Added binomial thm.
* May 2005: Rafal Kolanski, NICTA
Substantially improved retrieval of facts from theory/proof context.
* May 2005: Florian Haftmann, TUM
Several new antiquotation.
* February 2005: Lucas Dixon, University of Edinburgh
Substantially improved subst method.
$Id$