File Release Notes and Changelog

Release Name: Dirac-0.4.0

Notes:
  - Added constant quality encoding interface using PSNR
     as the quality measure, and using multi-pass frame
     coding
  - Added Intra-frame insertion and cut detection
  - Added C interface for the decoder application to allow
     interfacing to player software. Refer to the api documentation
     in dirac_parser.h.
  - Implemented unique frame headers to facilitate bit-stream
     parsing
  - Added instrumentation output from encoder and an 
     instrumentation display tool for visualising encoder
     decisions to help with algorithmic development
  - Cleansed and refactored numerous code files to add comments,
     improve readability and modularity
  - Added a unit testing framework based on cppunit for testing
     classes 
  - Fixed bug with vertical block separation always being set
     to 8 pixels
  - Added feature to encode only a section of input video rather
     than the whole sequence
  - Tweaked motion estimation parameters to improve performance,
     mostly for higher-res pictures
  - Included document describing the syntax of Dirac bitstream v0.1
    in the doc directory.
  - Fixed bug 1008694 (Out-of-tree building fails)
  - Fixed header and pkconfig installation
  - Updated algorithm documentation


Changes: