1.49 (25 Jan 2002):
  Added explicit use of RISCOSLib.
  Updated to use VersionNum logging.
1.49 (retagged) (12 Apr 2002):
  Added throwback option to Mk.
1.50 (14 May 2002):
  Added initial support for colour mapping.
1.50 (retagged) (14 May 2002):
  Added ColourMap veneers which I had forgotten.
1.51 (20 May 2002):
  Updated to use new OSLib functions.
  Added support for JPEG colour mapping.
  Added support for text area colour mapping.
1.51 (retagged) (23 May 2002):
  Fix for build issues since OSLib changed.
1.52 (01 Jul 2002):
  Updated to use colourmap descriptors.
1.53 (04 Aug 2002):
  Fix for failure to render non-colourmapped JPEGs.
1.54 (07 Oct 2002):
  Updated Makefile to new format.
1.55 (08 Oct 2002):
  Moved Messages files in build structure for standard makefile.
