Merge pull request #165 from Sidicer/dev/font-examples

Font related changes.

Release roll 1.8.5

Merge branch 'master' of https://github.com/lexus2k/ssd1306

Released 1.8.2

Still want to release 1.8.0

README updated

Roll version to 1.7.21

Updated doxygen documentation

Ported Emulator from 2.0.0