02/12/2020: v2.02
            - New feature: opens .prg files from command line too
            - minor bugfixes

07/12/2020: v2.01
            - minor bugfixes

05/30/2016: v2.0
            - totally rewritten program
            - GUI
            - use of webfont (C64 Pro Mono from STYLE)
            - preview to see the effect of the switches
            - syntax highlighting
            - formatting BASIC listings to enhance readibility

03/05/2004: v1.2
            - New feature: lower case mode (command line parameter LOWER)
              like C= + Shift on a Plus/4.
            - Because of the lower case mode I had to modify the already
              modified Commodore64-v51_mod.ttf font. If you installed the
              font from the earlier versions, you have to remove it and
              install this one.
            - minor bugfixes

06/01/2003: v1.1
            - New feature: branch statements are converted to HTML links. This
              feature can be switched off with command line parameter NOLINKS
            - minor bugfixes

05/02/2003: v1.0
            - Original release