chore(release): 7.0.0 [skip ci]

# [7.0.0](java-sdk-6.14.0...java-sdk-7.0.0) (2019-05-10)

### Bug Fixes

* test release ([b56bd5d](b56bd5d))

### Code Refactoring

* Remove conversation and core modules ([a84e6d5](a84e6d5))

### Features

* **Language Translator:** Add generated code from newest version of service ([f5a2f1d](f5a2f1d))
* Add common project to handle logic common to all services but separate from core ([009a67f](009a67f))
* Add interface for SDK-specific HTTP headers ([6b0a381](6b0a381))
* **Discovery:** Add generated code from newest version of service ([b7588a8](b7588a8))
* Make a bunch of changes to prep for the major release ([65de3d3](65de3d3))
* **Assistant v1:** Add generated code from newest version of service ([785a1d4](785a1d4))
* **Assistant v2:** Add generated code from newest version of service ([5181f41](5181f41))
* **common:** Retrieve User-Agent from core and append to current package version for full value ([758f3f2](758f3f2))
* **Compare and Comply:** Add generated code from newest version of service ([0095f12](0095f12))
* **Natural Language Classifier:** Add generated code from newest version of service ([d0fb224](d0fb224))
* **Natural Language Understanding:** Add generated code from newest version of service ([fc9865a](fc9865a))
* **Personality Insights:** Add generated code from newest version of service ([2853d30](2853d30))
* **Speech to Text:** Add generated code from newest version of service ([cabaadb](cabaadb))
* **Text to Speech:** Add generated code from newest version of service ([2f5b1f5](2f5b1f5))
* **Tone Analyzer:** Add generated code from newest version of service ([743af28](743af28))
* **Visual Recognition:** Add generated code from newest version of service ([4ea626d](4ea626d))

### Reverts

* **Natural Language Understanding:** Fix change that was supposed to be temporary ([968e1ae](968e1ae))

### BREAKING CHANGES

* a lot
* Conversation service has been removed