Changes since alpha 3 are:
- Fixed bug  Exception: Range Check (Rss)
- Removed limit on the number of Rss feeds.
- Fixed unwanted scrolling on Crystalfontz displays.
- Fixed bug: duplicated USB Palm entries in COMport list.
- Fixed bug:  Exception: Range check error (cpuspeed)
- Fixed bug: asked for disk to be inserted when checking free space
of a removable drive.
- Changed format of $UpTimes (from '12:34:56' to '12h 34m 56s'. Once
days appear it becomes '1d 3h 45m', etc).
- Fixed bug: Uptimes wrapped every 7 days.
- Extended uptime to work over 49.7 days.