Changelog for agum-2.3

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2010-06-21 John D. Ramsdell

* agum.cabal (Version): Released as version 2.3.

* agum.cabal (Build-Depends): changes dependency to
base >= 3 && <5, containers

2009-09-17 John D. Ramsdell

* agum.cabal (Version): Released as version 2.2.

2009-09-14 John D. Ramsdell

* src/Algebra/AbelianGroup/IntLinEq.hs: Integer solutions to
linear equation solver was placed in its own module.

2009-09-13 John D. Ramsdell

* src/Algebra/AbelianGroup/UnificationMatching.hs (unify): Changed
the result to be a substitution since unification always succeeds.

2009-09-05 John D. Ramsdell

* src/Algebra/AbelianGroup/UnificationMatching.hs:  Added
reference to Andrew Kennedy's Ph.D. thesis as it contains a proof
of correctness of the implemented matching algorithm.

* agum.cabal (Version): Released as version 2.1.

2009-08-29 John D. Ramsdell

* src/Algebra/AbelianGroup/UnificationMatching.hs (Substitution,
apply): Hid the representation of a substitution and supplied a
function for applying a substitution to a term.

* agum.cabal (Version): Released as version 2.0.