Configurable Rainbow Swirl range (qmk#4376)

* Configurable Rainbow Swirl range

This allows tweaking of the rainbow effect to
 get different effects on keyboards with varied
 LED layouts. We found the value 1950 works on
 the RGBKB.net Sol to get a cool striped effect
 across the keyboard.

* Document RGBLIGHT_RAINBOW_SWIRL_RANGE

* Better wording for the documentation

Add localized LED flash effect on keypress to Massdrop ALT (qmk#4340)

Fix Spacing issue in makefile that breaks Terminal config

command.h include was not set correctly

Fixe line endings

Clarify the Mod Tap defines in documentation (qmk#4352)

* Fix up Mod Tap settings keys

* Change link names

* permissive hold wordsmith

Co-Authored-By: drashna <[email protected]>

* ignore mod tap wordsmithing

Co-Authored-By: drashna <[email protected]>

* grammar fix

Co-Authored-By: drashna <[email protected]>

* wordsmithing

Co-Authored-By: drashna <[email protected]>

* word smithing

Co-Authored-By: drashna <[email protected]>

5x5bt (qmk#4333)

* got bluetooth working

* get rid of description on bluetooth

* get rid of commented code used for testing

* Update config.h

Increasing square wave buffer to max volume. (qmk#4296)

* Increasing square wave buffer to max volume.

* Using range designated initializers for square waves; defining DAC_SAMPLE_MAX.

USB Suspend for arm_atsam protocol

Rewrote USB state tracking for implementation of suspend state.
Updated suspend.c in entirety.
Main subtasks (generally hardware related) are now run prior to keyboard task.

Remove old declaration

Co-Authored-By: nooges <[email protected]>