* Added Modular keyboards L,R and NUM
Created code modules for the 3 modules of the modular keyboard.
Original idea by MechboardsUK. Uses i2c implementation similar to lets
split
* Remove modular from master
This is to fix incorrect branching
* General fixes for RGB_matrix
- Complited speed support for all effects
- Fixed raindrop effects to initialized after toggle
- Fixed raindrop effects to use all available LEDs
- Fixed effect step reverse function
- Moved RGB_MATRIX_SOLID_REACTIVE under correct flag
* Documentation update for RGBmatrix
* More doc updates