Changes in version 0.3:
  
  * Documentation on individual function arguments is now implemented 
  
  * Links can be made to identifiers that aren't in scope, by using
    the fully qualified name.

  * Instances are collected and listed with the appropriate classes
    and datatypes (not for derived instances yet).

  * Single quotes are only interpreted specially when they surround a
    legal Haskell identifier, otherwise they are treated literally.

  * Bird-tracked text is now literal.  If you want marked-up text in
    a code block, use the @...@ notation instead.

  * Various changes to the layout, it generally looks nice now.

  * Various bugs fixed.

-----------------------------------------------------------------------------
Changes in version 0.2:

  * The [...] markup for typewriter font has been changed to @...@.

  * Module attributes introduced (see the documentation for details).

  * {- ... -} style comments may now be used for documentation annotations

  * Recursive modules are detected and reported as an error.

  * Existential constructors and rank-N types are now groked by the parser

  * Some type rendering cleaned up

  * `abc' is accepted as well as 'abc' to markup an identifier

  * Several bugs fixed, and error messages improved.