moved read_class, read/cert_classrel/arity to sign.ML;
axclass: moved outer syntax to isar_syn.ML;
instance: moved to Tools/class_package.ML;
simplified interfaces;
tuned;
Contributions to Isabelle
-------------------------
* October 2005: Martin Wildmoser, TUM
Sketch for Isar 'guess' element.
Contributions to Isabelle 2005
------------------------------
* September 2005: Lukas Bulwahn and Bernhard Haeupler, TUM
HOL-Complex: Formalization of Taylor series.
* September 2005: Stephan Merz, Alwen Tiu, QSL Loria
Components for SAT solver method using zChaff.
* September 2005: Ning Zhang and Christian Urban, LMU Munich
A Chinese theory.
* September 2005: Bernhard Haeupler, TUM
Method comm_ring for proving equalities in commutative rings.
* July/August 2005: Jeremy Avigad, Carnegie Mellon University
Various improvements of the HOL and HOL-Complex library.
* July 2005: Florian Zuleger, Johannes Hoelzl, and Simon Funke, TUM
Some structured proofs about completeness of real numbers.
* May 2005: Rafal Kolanski and Gerwin Klein, NICTA
Improved retrieval of facts from theory/proof context.
* February 2005: Lucas Dixon, University of Edinburgh
Improved subst method.
* 2005: Brian Huffman, OGI
Various improvements of HOLCF.
Some improvements of the HOL-Complex library.
* 2005: Claire Quigley and Jia Meng, University of Cambridge
Some support for asynchronous communication with external provers
(experimental).
* 2005: Florian Haftmann, TUM
Contributions to document 'sugar'.
Various ML combinators, notably linear functional transformations.
Some cleanup of ML legacy.
Additional antiquotations.
Improved Isabelle web site.
* 2004/2005: David Aspinall, University of Edinburgh
Various elements of XML and PGIP based communication with user
interfaces (experimental).
* 2004/2005: Gerwin Klein, NICTA
Contributions to document 'sugar'.
Improved Isabelle web site.
Improved HTML presentation of theories.
* 2004/2005: Clemens Ballarin, TUM
Provers: tools for transitive relations and quasi orders.
Improved version of locales, notably interpretation of locales.
Improved version of HOL-Algebra.
* 2004/2005: Amine Chaieb, TUM
Improved version of HOL presburger method.
* 2004/2005: Steven Obua, TUM
Improved version of HOL/Import, support for HOL-Light.
Improved version of HOL-Complex-Matrix.
Pure/defs: more sophisticated checks on well-formedness of overloading.
Pure/Tools: an experimental evaluator for lambda terms.
* 2004/2005: Norbert Schirmer, TUM
Contributions to document 'sugar'.
Improved version of HOL/record.
* 2004/2005: Sebastian Skalberg, TUM
Improved version of HOL/Import.
Some internal ML reorganizations.
* 2004/2005: Tjark Weber, TUM
SAT solver method using zChaff.
Improved version of HOL/refute.
$Id$