Even more functions for the Arduino GPS Clock

The multi-face Arduino GPS Clock has some new clock faces in software version 1.3.0:

• Demo mode, where all screens are cycled through, with 10-15 seconds per screen
• Astronomical clock
• Wordclock display
• Roman numbers
• Morse code clock

This brings the total to 35 different screens. The updated code as well as documentation is on my Github page.