1.21alpha - 26 Jan 01
Snapshot release (should be semi-stable) for benefit of other users

1.20alpha - 7 Sep 00 

Two step matching algorithm added and various misc work done on code
Various examples added
Test scripts added

1.11 - 24 Nov 99

Minor fixes for latest version of hugs/ghc 
Added brief example for doing unfold fusion 
Started changelog - this might get retrospectively filled in for previous
versions at some point :)