[Keymap] "Cadet-style" keymap + improved LAYOUT macro for melody96 (#5985)

* [melody96] "Cadet-style" keymap for melody96; LAYOUT macro for hotswap keyboard.

* Rename macro.

* Fix layer types.

[Keyboard] Add new keyboard BusinessCard (#6015)

* add Business Card

* remove helix code

* Change rgblight use noeeprom

* remove include

* Update keyboards/business_card

* Forgetting to erase

[Keyboard] Add support for Soyuz numpad (#6030)

* Generate project, fill in the details

* Repair json

* Separate keymaps to numpad and all-1U

* Apply suggestions from code review

Co-Authored-By: Elliot Powell <32494740+e11i0t23@users.noreply.github.com>
Co-Authored-By: Drashna Jaelre <drashna@live.com>

[Keyboard] Add support for KBD8X MKII (#6033)

* Begin work

* Make things a tad easier to read

* Fix spacing

* Get things compiling

* Build a variety of generic keymaps

* Correct RGB pin

* Add configurator json

* Apply suggestions from code review

Co-Authored-By: Elliot Powell <32494740+e11i0t23@users.noreply.github.com>
Co-Authored-By: MechMerlin <30334081+mechmerlin@users.noreply.github.com>

Add additional pins for Teensy 3.x and LC

[Keymap] fixed location of del on fn layer (#6040)

[Keymap] add 2 custom leds to handwired/jotanck (#6042)

* add JOTANCK_LED1&2

* set BACKLIGHT_ENABLE = no

* add 2 custom leds

* swap custom led pins 1&2

* readme update

* update default keymap

[Keymap] jotix's ortho4x12 layout  (#6045)

* jotix ortho 4x12 layout tweaking

* tapping toggle -> 2

* leds on/of on layer states

* add JOTANCK_LED1&2

* set custom leds on layers

* bug fix

* bug fix

* rearrange layers

* leds on layers bug fixed

* leds working

[Docs] Update getting_started_introduction.md (#6037)

* Update getting_started_introduction.md

* Update docs/getting_started_introduction.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update docs/getting_started_introduction.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update docs/getting_started_introduction.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update docs/getting_started_introduction.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

Initial attempt to fix docker creating files as root

[Keyboard] Remove relative location of i2c master/slave as it causes the build to write to a folder outside of qmk_firmware (#6039)

[Keyboard] YMD96 refactor (#5472)

* Remove JJ50 data from YMD96

JJ50 was actually added as its own keyboard when this was added in #2546. It should have been taken out then, but wasn't.

* Update ymd96.h

- use #pragma once include guard
- remove redundant file includes

* Update LAYOUT_iso macro to K<row><col> notation

* Update LAYOUT_custom macro to K<row><col> notation

* Update LAYOUT_default macro to K<row><col> notation

* Refactor default keymap

* Rename readme file to lowercase

* Rename layers enum and default layer

- renamed layers enum to layer_names
  - proposed by fauxpark in Issue 5977, and I like the idea
    - https://github.com/qmk/qmk_firmware/issues/5977#issuecomment-495924338
- renamed the base layer to _DEFAULT
  - I think it looks nicer.

Update reference_configurator_support.md

We no longer auto generate bootloader into info.json through the website therefore this can be removed

Use qmk docker image for travis CI builds

[Keyboard] Remove file with same name and different case (#6028)

[Keyboard] Fix json for NK65 (#6026)

[Keymap] added hhkb layout for tada68 (#6027)

[Keymap] Added keymap for user jasondunsmore (#6023)

[Keyboard] Fix jc65 when RGB or BACKLIGHT disabled (#6022)

Update feature_encoders.md

Fix missing closing comment after second encoder