Bump version: 0.13.2 --> 0.13.3 (tensorflow#838)

* Depend on the latest dependency versions

Bump version: 0.13.1 --> 0.13.2; depende on latest dependencies (tens…

…orflow#788)

Bump version: 0.13.0 --> 0.13.1 (tensorflow#733)

Also update dependency versions

Bump version to 0.13.0 (tensorflow#700)

Dependency version bumps:

* tfjs-core --> 0.13.0
* tfjs-layers --> 0.8.0
* tfjs-converter --> 0.6.0

Bump version: 0.12.5 --> 0.12.6 (tensorflow#647)

* Bump version: 0.12.5 --> 0.12.6

Update dependencies to the latest

Bump version: 0.12.4 --> 0.12.5 (tensorflow#606)

Also update dependency versions

Bump version to 0.12.4 (tensorflow#555)

Bump version to 0.12.3 (tensorflow#527)

* Bump version to 0.12.3

* Depend on tfjs-layers 0.7.1
* Depend on tfjs-converter 0.5.2

Update union to 0.12.2 with core update to 0.12.4. (tensorflow#509)

Release new patch version 0.12.1 (tensorflow#507)