firmware/src/KeyboardCommon.c (matrixFn) : Map Fn-1 to Fn-6 and Fn-0 to Ctrl-1 to Ctrl-6 and Ctrl-0
firmware/src/KeyboardCommon.c (makeReport) : Refine
firmware/src/KeyboardCommon.c : Remove cj109 and sj109 mode
firmware/src/KeyboardCommon.c (processKeys) : Shrink the code size
firmware/src/KeyboardCommon.c (makeReport) : Add a debouncing mechanism