Gavin Hurlbut

Removed "register" as it is obsolete after C++11

2

As I am getting constant warnings from g++ from Arduino IDE v2, I'm nuking the now pointless "register" definitions. We are now compiling usually with C++17, or maybe C++11, both...

- **Describe the scope of your change--i.e. what the change does and what parts of the code were modified.** - I added clearDisplay() and display() as virtual member functions in...