[Keyboard] fourier via keymap (#16335)

[Keyboard] add support for Quark_Plus (#16324)

Co-authored-by: Ryan <fauxpark@gmail.com>

[Keymap] Change helix:five_rows_jis keymap to use split_common (#16538)

[Keymap] Change helix:fraanrosi keymap to use split_common (#16533)

merge/uma - Resolve configurator issues (#16551)

Change helix:five_rows keymap to use QMK standerd oled driver (#16539)

`qmk info`: nicer rendering of ISO enter (#16466)

Update info.json (#16540)

Some docs improvements (#15845)

* docs: clarify in "Keymap Overview" what LAYOUT is and isn't

It is not strictly necessary to use LAYOUT macros in keyboard.c, but it
is a convenient abstraction of hardware internals, allowing focus on the
physical keyboard layout.

From the C source point of view LAYOUT is macro with a parameter list,
which expands to a array of rows that each is an array with a keyboard
scancode for each column. A macro parameter list is not an array, and
even less a single array.

Perhaps no big deal, but also no reason to give incorrect hints.

* docs: update "Understanding QMK's Code" to current code structure introduced in 96e2b13d1de

This part of the documentation was no longer correct. I tried updating
it, mainly copy editing and using github links to latest release.

This is not trying to fix all problems, but just trying to fix some
problems while reusing much of the old phrases and structure.

* Update docs to use "qmk format-python"

support more leds (#15840)

[Keyboard] BDE Rev2 (#15877)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

More validation of declared LAYOUT macro names (#16520)

Bug report template: require `qmk doctor` output (#16517)

analog.[ch]: remove unnecessary includes (#16471)

Melody96 refactor (#16455)

Update pr_checklist.md (#16484)

Update readme.md template link from https://github.com/qmk/qmk_firmware/blob/master/data/templates/avr/readme.md to https://github.com/qmk/qmk_firmware/blob/master/data/templates/keyboard/readme.md

Typo in squeezing_avr.md (#16506)

Fixed typo in squeezing_avr docs.

Fix use of ISSI driver config before init (#16493)

Fix helix/rev2 not working properly when using split_common. (#16512)

When helix/rev2 was using split_common, it didn't work properly and I couldn't type on the right hand side.

The cause is that the following code, added in 0.16.0 to `quantum/keyboard.c`, does not include `quantum/split_common/split_util.h` but instead includes `keyboards/helix/rev2/split_util.h`. Therefore, `split_pre_init()/split_post_init()` in `quantum/split_common/split_util.c` was not called.

```c
  #ifdef SPLIT_KEYBOARD
  #    include "split_util.h"
  #endif
```

[Bug] fix v-usb connection enumeration, ifdef workaround (#16511)

Co-authored-by: Joel Challis <git@zvecr.com>