chore(release): 8.0.0 [skip ci]

# [8.0.0](java-sdk-7.4.1...java-sdk-8.0.0) (2019-10-04)

### Features

* **Assistant v1:** Regenerate service ([ccbd5da](ccbd5da))
* Add initial generation of Visual Recognition v4 ([7533837](7533837))
* Regenerate all services other than Assistant v1 ([c44118e](c44118e))
* **Discovery:** Add getAutocompletion method ([b03ebfe](b03ebfe))
* **Discovery:** Add missing response property ([6a95336](6a95336))
* **Discovery:** Add spellingSuggestions param to QueryOptions ([68bf9bf](68bf9bf))

### BREAKING CHANGES

* **Discovery:** This is to trigger a major release. All breaking changes will be in the migration guide.