DC01 updates and I2C avr speed overwrite (qmk#4088)

* DC01 updates and I2C avr speed overwrite

- General updating of DC01
- Made F_SCL define in AVR I2C driver overwritable from config.h

* Update drivers/avr/i2c_master.c

rgb_matrix: continue calling rgb_matrix_indicators() when toggled off

This allows user code to continue to use the matrix for indication, even
when the RGB toggle is off, using rgb_matrix_set_color().

Without this change, it's impossible for user code to use the matrix
when the toggle is off, as any changes get overwritten with black on the
next task cycle, and the indicator code is not called at all.

process_ucis: Add a callback for success (qmk#4067)

There is `qk_ucis_symbol_fallback` for the case where symbol lookup
fails, but there wasn't one for the success case. This adds
`qk_ucis_success`, called after successfully finishing the UCIS symbol
input.

Thanks to @drashna for the idea!

Signed-off-by: Csilla Nagyné Martinák <[email protected]>

Enable support for Linux Mint 18 with linux_install.sh (qmk#4042)

Enable support for ubuntu-derived linux-es in installer

Checks /etc/os-release for mention of ubuntu and debian.

Linux Mint uses ID_LIKE=ubuntu, not ID_LIKE=debian (as seen in
Ubuntu 16.04, unsure about others)

add JP keycode for MacOSX (qmk#4033)

Adds a method allowing to set custom colors to the rgb matrix

Make digital rain RGB matrix effect #define configurable.

Fix YMDK NP21 keyboard to use proper keyboard level functions (qmk#3042)

* Use proper function levels

* Add matrix init functions

* Convert KEYMAP to LAYOUT

Or @mechmerlin is going to hunt me down and harm me... probably :)

* Fix conflict issues

RAMA M6-B and IS31FL3218 driver (qmk#4021)

* Initial RAMA M6-B commit.

* Moved IS31FL3218 driver, minor cleanups

* Refactor, added dynamic keymap.

* Added dynamic keymaps to RAMA M6-A

* Refactor M6-A and M6-B to use common code.

* Formatting

* Cleanup

* Cleanup

* Changes from review

CTRL keyboard bootloader_jump support

Adds support for CTRL keyboards to enter bootloader via bootloader_jump()