Unify MIDI note calculation with the audio feature's algorithm (#21588)

Unicode: move keycode aliases to a separate header (#21613)

Merge remote-tracking branch 'origin/master' into develop

helix/rev3_4rows, helix/rev3_5rows: Fix build with converters (#21608)

The code for Helix rev3 boards could not be built with, e.g.,
`CONVERT_TO=rp2040_ce` due to invalid `#include <stdio.h>` in the
keyboard level `config.h` (apparently the AVR version of that file
contains guards against usage in assembly code, which was hiding the
bug).  Move `#include <stdio.h>` to the C sources which need it.

Merge remote-tracking branch 'origin/master' into develop

Amend documented `RGBLIGHT_HUE_STEP` default value (#21617)

Remove needless precision in additive DAC sample generation (#21498)

Reduce needless precision in audio note frequency calculation (#21496)

Merge remote-tracking branch 'origin/master' into develop

On-each-release tap dance function (#20255)

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>

[Keyboard] Add splitkb.com's Aurora Sofle v2 (#21499)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Thomas Baart <mail@thomasbaart.nl>

Fix stuck note with square wave in additive DAC (#21589)

Merge remote-tracking branch 'origin/master' into develop

Revert "Equals keyboard" (#21622)

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Phoenix Project No 1 support (#21068)

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

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add m1 keyboard (#19799)

Co-authored-by: adophoxia <100170946+adophoxia@users.noreply.github.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: wb-joy <chang.li@westberrytech.com>
Co-authored-by: Joy Lee <joylee.lc@foxmail.com>

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] boardsource/equals (#21230)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: jack <0x6A73@pm.me>