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

preonic/rev3_drop: Fix old custom matrix code (#14857)

The old custom matrix code for Preonic rev3 was relying on the
`matrix_col_t` type, because the code actually reads the row pins and
assembles the state for whole columns, and then transposes the matrix in
the custom debouncing code.  Restore that type (which is no longer
defined by the core QMK code) to make the custom matrix code work
properly (when `matrix_row_t` was used instead of `matrix_col_t`, the
state of two electrical rows was lost, and those electrical rows
corresponded to the bottom physical row, which did not work).

Remove legacy Makefile functionality (#14858)

Infer more when building features (#13890)

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

[Keymap] added media controls, copy and paste; moved print screen (#14850)

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

[Keyboard] Add SpiderIsland 25 key keyboard (#14793)

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

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

[Keyboard] Update Support for The Uni (#14569)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: ridingqwerty <george.g.koenig@gmail.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Peter Park <peter@Peters-MacBook-Air.local>

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

Try to clarify "number of elements in info.json does not match" error (#14844)

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

[Keyboard] Fix minor typo in Ploopy Trackball Nano Docs (#14717)

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

add docs/ja/ja_doc_status.sh (#14402)

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

[Keyboard] Amended Some Pins - KiwiKeebs Macro V2 (#14824)

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Ash <ash@splitpixel.co.uk>

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

[Keyboard] Adding CK60 and CK65 (#14737)

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