- Add method to trigger blinking of the display for a certain count and durations
also with a optional off-string
- Add 3x blinking after applying a new target length with preset or set
buttons
To abstract rather complex functions for 7 segment displays e.g. blink text, scroll
text... a class was created.
This makes it possible to have 2 instances for displayTop and
displayBottom resulting in no duplicate code
Fix bug where sartup randomly crasehd several times because spi config
was initialized with random data -> init with 0
Fix bug where length now was not truncated resulting in flickerin
Fix bug in welcome message where hello string contained random data