Merged r12292.
CHANGELOG for 2.4.0.
Updates for 2.3.4 release.
Branch for custom fields formats refactoring.
Merged r12288 (#15369).
Bulgarian translation by Ivan Cenov (#15369).
Fixed UI tests.
Use :button_edit instead of :button_update for editing issues (#15275).
Use :button_save instead of :button_update on committers form (#15275).