Changelog for COrdering-2.3

2.1 --- * Initial Hackage/Cabal release. Version set to 2.1 to distinguish from the 2.0 (non-cabal) release on my home page. 2.2 (Final release) ------------------- * No code changes. * Removed link to Haskell wiki homepage as this will never be done. * Removed link to maintainer email. 2.3 --- No code changes, just reclaiming ownership and bumping version No.