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

[Keyboard] Fix compiler issues for handwired/6macro (#11098)

[Split] Sync Timer feature (#10997)

A timer that is kept in sync between the halves of a split keyboard

Add support for Drop + Ryloo Studio "Hello" M0110. (#11050)

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

fix handwired/swiftrax/beegboy keymaps (#11071)

Co-authored-by: Swiftrax <swiftrax@gmail.com>

fix handwired/swiftrax/bebol keymaps (#11072)

Co-authored-by: Swiftrax <swiftrax@gmail.com>

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

Moved default LALT and LWIN for BKS65 (#11087)

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

Adding bootleg and waffling60 rev b (#10846)

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

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

nix-shell: add milc dependency (#11086)

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

Added VIA keymap to YMDK bface keyboard (#11002)

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

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

Reduce travis load by replacing an exclusive grep with an inclusive grep (#10964)

* add -n to avoid compiling

* switch to an include rather than exclude strategy

Branch point for 2021 Feb 27 Breaking Change

Configurable serial usart timeout (#11057)

Fix int wrapping for timer_expired macros and use MAX defines for consistency and clarity (#10996)