update version to 0.9.0

Checks if window location is not undefined (tensorflow#1002)

BUG

update version to 0.8.4

Update version to 0.8.3 (tensorflow#986)

Update to 0.8.2. (tensorflow#984)

Bump version to 0.8.0 (tensorflow#968)

Update to 0.7.2. (tensorflow#962)

Update version to 0.7.1. (tensorflow#940)

Update to 0.7.0. (tensorflow#935)