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Update understanding_qmk.md (#19664)

Changed "...4 row by 5 column numpad" to "...5 row by 4 column numpad" on line 46.

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escaped stray backslash in bux.py (#19667)

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[Keyboard] Add the Black Hellebore (#19655)

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[Keyboard] Add missing `dip_switch_update_kb` for Keychron V2 (#19674)

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fixup splitkb/kyria VIA keymap (#19676)

Fixup handwired/jscotto/scotto40 (#19675)

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[Keyboard] Fix boardsource/lulu/avr encoder pins (#19672)

[Bug] rp2040: fix timer wrap deadlock in ws2812 vendor driver (#19652)

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

Allow overriding of keymap/encodermap layer count. (#19325)

Corrections to uart driver for Chibios platform (#19075)

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[Keymap] Add youturn/yt keymap for think65 (#19300)

Co-authored-by: jack <0x6a73@protonmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Jue Liu <youturn@Jues-MacBook-Pro.local>

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

[Keyboard] Add Scotto40 Keyboard (#18453)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>