Recent Commits to dart-sass:main

Support empty custom properties

See sass/sass#4078

Properly handle dev changelogs in bump-version-* tasks

Previously this wouldn't update -dev changelogs if we were bumping a
more major version than the -dev version bumped.

Disallow passing functions/mixins across compilations (#2544)

Co-authored-by: Natalie Weizenbaum <nweiz@google.com>