Also:
- Changes to show the unit name on the boot logo screen
- Added new example sketch SetNameAndID to allow setting the name and ID
- Updated the LICENSE.txt file and made changes to include it in the
Doxygen generated documentation
The Sprites class has been given direct access to the screen buffer so it
doesn't need a pointer to been given to it.
Also updated README.md and keywords.txt, and made minor indent changes in
the .h files.