develop
Fix #9311 - Use TestBed.inject instead of TestBed.get (#24729)
Milestone 1.6 and 1.7: Added Math Equation Input Interaction. (#9649)
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)