Mon Sep 18 19:11:24 EDT 2006  Manuel M T Chakravarty <chak@cse.unsw.edu.au>
  * Pattern matching of indexed data types
  Thu Aug 24 14:17:44 EDT 2006  Manuel M T Chakravarty <chak@cse.unsw.edu.au>
    * Pattern matching of indexed data types
    - This patch is the last major puzzle piece to type check and desugar indexed 
      data types (both toplevel and associated with a class).
    - However, it needs more testing - esp wrt to accumlating CoPats - and some 
      static sanity checks for data instance declarations are still missing.
    - There are now two detailed notes in MkIds and TcPat on how the worker/wrapper
      and coercion story for indexed data types works.