* September 2005: Bernhard Haeupler Method comm_ring for proving equalities in commutative rings.* July 2005: Jeremy Avigad, Carnegie Mellon University Various improvements of the HOL and HOL-Complex library.* July 2005: Florian Haftmann, TUM Some combinators for linear functional transformations in ML: |-> #-> fold_map etc.* July 2005: Florian Zuleger, Johannes Hoelzl, and Simon Funke, TUM Some structured proofs about completeness of real numbers.* 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.$Id$