[chore] Release 2.2.0 (firebase#300)

[chore] Release 2.1.0 (firebase#297)

[chore] Release 2.0.0 (firebase#270)

[chore] Release 1.17.1 (firebase#261)

[chore] Release 1.17.0 (firebase#256)

[chore] Release 1.1.6.0 take 2 (firebase#250)

[chore] Release 1.15.0 (firebase#221)

[chore] Release 1.14.0 (firebase#198)

[chore] Release 1.13.0 (firebase#188)

[chore] Release 1.12.0 (firebase#179)