Version 2.7.5. New micronucleus bootloader and binary version 2.6 wit…

…h info function, removed ATtiny88 support.

Version 1.7.2

Test repo as core without platform-url

update spi, fix lcd error

updated to latest arduino version with transaction support

digicdc speed up! thanks @Defragster

fix digimouse

Initial import of support files for all Digistump boards - Digispark,…

… Pro, DigiX - including libraries, examples, tools, and other support files for the Arduino IDE