There are now 3 potential locations to send HID reports:
1. USB
2. The bluefruit easy key
3. Adafruit BLE
Generally speaking, if USB is connected then we should prefer to
send the reports there; it is generally the best channel for this.
The bluefruit module has no feedback about bluetooth connectivity
so the code must speculatively send reports over both USB and bluetooth.
The BLE module has connectivity feedback. In general we want to
prefer to send HID reports over USB while connected there, even
if BLE is connected. Except that it is convenient to force them
over BLE while testing the implementation.
This policy has been extracted out into a where_to_send function
which returns a bitmask of which of the channels should be used.
* .build containment implemented
* no destructive variable setting - builds in either folder
* make from 3 places
* cleans before each build
* make from root with keyboard=keyboard, keymap=keymap
* make from keyboard/keyboard with keymap=keymap
* make from keymaps/keymap
* only implemented on planck
* adds color diag to avr-gcc
* makefiles for all plancks, clean-up
* quick build-all makefile for plancks
* reformatting of make output (colors)
* color toggle, tmk path corrections
* correct if statement for color
* move config.h to main makefile, updates preonic, atomic
* format update, all keyboards targets
* makefile optional for build all target, alps and arrow_pad updated
* alps updated
* make planck default, trying out travis recipe for all-keyboards
* all-keymaps target, different travis recipe
* updates alps64
* updates keyboards to new format
* updates clue* projects
* all projects updated, specialise EZ .hex, let .hex through
* updates travis
* automatically find root, keyboard, keymap
* silent echo, cleaned-up mass make output
* updates all keyboards' .hex files except EZ
* Rename Bantam44.c to bantam44.c
* Rename Bantam44.h to bantam44.h
* nananana
* adds six key keyboard
* does same to ez as rest
* updates send_string example
* brings ergodox_ez up to date
* updates template/new project script
* adds sixkeyboard
* adds readme for sixkeyboard
* adds sixkeyboard to travis
* filenames, gitignore mess
* define clock prescaler stuff manually
* make quick, size test example
* documentation and dfu-no-build
* implements leader key for planck experimental
* allows override of leader timeout
* adds ability to use the leader key in seq
* fixes leader keycode
* adds chording prototype
* fixes keycode detection
* moves music mode to quantum.c
* disables chording by default
* adds music sequencer functionality
* implements audio/music functions in quantum.c
* splits up process_action to allow independent processing of actions
* moves midi stuff to quantum.c
* adds additional scales for midi
