V1.0.0  1997 May 03  First version
V1.1.0  1997 May 12  Version for Delphi 3.0
                     Add clipping region for background transparency
                     Make height and width 17 pixels
                     Compile as Delphi Design & Runtime package
V1.1.2  1997 Oct 19  Only invalidate if colour is changed
                     Remove need for DJT's run-time package, 
                     .. will need $R LED.dcr in your form unit
