develop
Fix #9311 - Use TestBed.inject instead of TestBed.get (#24729)
Milestone 1.3 and 1.4: Add Algebraic Expression Input Interaction (#9553)
Black formatter staging (#23456)
Apply prettier 2 (#19862)
Fix part of #25997: Replace core-js/es7/reflect with reflect-metadata and consolidate to single import location (#26475)