The recent change to unnest macros put the enter on the wrong matrix key. On the 1uprgb, the ANSI and ISO enters share the same cell as does the ANSI and ISO backslash.
* use #pragma once
* get rid of code for unused indicators
* pragma once and other small fixes for consistency
* use #pragma once
* pragma once and other small fixes for consistency
* add a short blurb to the readme
* turn on compiler optimization flags
* remove the compiler optimization
* remove compiler optimization for super16
