Migrate ACTION_BACKLIGHT_* to BL_* (qmk#6299)

* Branch point for 2019 Aug 30 Breaking Change

* LUFA USB descriptor cleanup (qmk#4871)

* Fix indentation

* Fix braces

* Expand descriptor headers

* Align descriptor elements

* Nicer formatting

* Tidy up preprocessor statements

* Remove VERSION_BCD redefine - LUFA_VERSION_INTEGER is currently 0x170418

* Tidy up comments

* Tweak ordering of  HID report elements (no functional changes)

* We don't need all of these newlines

* Move default USB_MAX_POWER_CONSUMPTION closer to where it makes sense

* Ask nicely

* Add some more comments

* Change indentation back to 4 spaces

* Add changelog entry

* Language Keymap extras backport from ZSA fork (qmk#6198)

* Swedish extra keymap refactor

* Fix swedish $ sign definition (qmk#81)

* Fix br abnt2 keymap compilation error

* Add PR changelog doc

* Update PR6198.md

* Enforce clang-format (qmk#6293)

* Enforce clang-format on commit for core files

* forgot about tests

* Migrate ACTION_LAYER_MOMENTARYs to MO() (qmk#5176)

* Migrate ACTION_LAYER_MOMENTARYs to MO()

* Add changelog entry

* Update docs/ChangeLog/20190830/PR5176.md

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

* Migrate ACTION_BACKLIGHT_* to BL_*

* Add changelog

* Update docs/ChangeLog/20190830/PR6299.md

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

docs/ChangeLog/20190830/PR6299.md

@@ -0,0 +1,4 @@
+* Migrating `ACTION_BACKLIGHT_*()` entries in `fn_actions` to `BL_` keycodes
+    * `fn_actions` is deprecated, and its functionality has been superseded by direct keycodes and `process_record_user()`
+    * All keymaps using these actions have had the relevant `KC_FN*` keys replaced with the equivalent `BL_*` keys
+    * If you currently use `KC_FN*` you will need to replace `fn_actions` with the [custom keycode](https://docs.qmk.fm/#/custom_quantum_functions) and [macro](https://docs.qmk.fm/#/feature_macros) features