[chore] Release 5.2.0 (firebase#596) 

[chore] Release 5.1.0 (firebase#587) Bumped version to 5.1.0

[chore] Release 5.0.3 (firebase#580) 

[chore] Release 5.0.2 (firebase#567) 

[chore] Release 5.0.1 (firebase#557) 

[chore] Release 5.0.0 (firebase#547) 

[chore] Release 4.5.3 (firebase#537) - Release 4.5.3

[chore] Release 4.5.2 (firebase#533) - Release 4.5.2

[chore] Release 4.5.1 (firebase#527) 

[chore] Release 4.5.0 (firebase#516)