watson-developer-cloud/CHANGELOG.md

## [4.0.1](https://github.com/watson-developer-cloud/node-sdk/compare/v4.0.0...v4.0.1) (2019-03-29)


### Bug Fixes

* add compare comply keyword to package.json (to trigger release) ([7905445](https://github.com/watson-developer-cloud/node-sdk/commit/7905445))

# [4.0.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.18.4...v4.0.0) (2019-03-28)


### Bug Fixes

* **icp:** disabling ssl verification now works for websocket connection ([f8466c8](https://github.com/watson-developer-cloud/node-sdk/commit/f8466c8))
* update ibm-cloud-sdk-core to 0.1.1 ([29f87df](https://github.com/watson-developer-cloud/node-sdk/commit/29f87df))


### Build System

* remove support for node 4 ([1548413](https://github.com/watson-developer-cloud/node-sdk/commit/1548413))


### chore

* remove all code dealing with api_key in the base class ([92d48e2](https://github.com/watson-developer-cloud/node-sdk/commit/92d48e2))
* **conversation:** remove conversation service and all associated code ([c810de2](https://github.com/watson-developer-cloud/node-sdk/commit/c810de2))
* **dialog:** remove dialog service and all associated ([7d7408f](https://github.com/watson-developer-cloud/node-sdk/commit/7d7408f))
* **language-translator-v2:** remove language translator v2 service and all associated code ([83d9232](https://github.com/watson-developer-cloud/node-sdk/commit/83d9232))
* **personality-insights:** remove Personality Insights v2 ([e5e5302](https://github.com/watson-developer-cloud/node-sdk/commit/e5e5302))


### Code Refactoring

* **assistant-v1:** change name of variable `export` to `_export` ([91ed5a4](https://github.com/watson-developer-cloud/node-sdk/commit/91ed5a4))
* **assistant-v2:** parameter names changed for v4 ([f6adbe9](https://github.com/watson-developer-cloud/node-sdk/commit/f6adbe9))
* **compare-comply:** parameter names changed for v4 ([908d8e7](https://github.com/watson-developer-cloud/node-sdk/commit/908d8e7))
* refactor core code to use `axios` instead of `request` for network requests ([f656731](https://github.com/watson-developer-cloud/node-sdk/commit/f656731))
* **discovery:** remove compatibility layer for discovery ([8571a1f](https://github.com/watson-developer-cloud/node-sdk/commit/8571a1f))
* **discovery:** rename model `QueryResultResultMetadata` to `QueryResultMetadata` ([b1a124c](https://github.com/watson-developer-cloud/node-sdk/commit/b1a124c))
* **natural-language-classifier:** remove compatibility layer for natural language classifier ([0ac087c](https://github.com/watson-developer-cloud/node-sdk/commit/0ac087c))
* **natural-language-understanding:** remove compatibility layer for natural language understanding ([359cc79](https://github.com/watson-developer-cloud/node-sdk/commit/359cc79))
* **personality-insights-v3:** remove compatibility layer for personality insights v3 ([1b27685](https://github.com/watson-developer-cloud/node-sdk/commit/1b27685))
* **speech-to-text:** remove compatibility layer for speech to text ([310bdd0](https://github.com/watson-developer-cloud/node-sdk/commit/310bdd0))
* **text-to-speech:** remove compatibility layer for text to speech ([6994d3c](https://github.com/watson-developer-cloud/node-sdk/commit/6994d3c))
* **tone-analyzer:** remove compatibility layer for tone analyzer ([9f10898](https://github.com/watson-developer-cloud/node-sdk/commit/9f10898))
* **visual_recognition:** v4 changes ([3957e2d](https://github.com/watson-developer-cloud/node-sdk/commit/3957e2d))
* in `query` and `federatedQuery`, only accept string values for certain parameters. ([06d7c65](https://github.com/watson-developer-cloud/node-sdk/commit/06d7c65))
* in discovery, rename `getSourceCredentials` to `getCredentials` ([6fac701](https://github.com/watson-developer-cloud/node-sdk/commit/6fac701))
* **visual-recognition:** remove compatibility layer for visual recognition ([6377067](https://github.com/watson-developer-cloud/node-sdk/commit/6377067))
* remove index.ts file as it was deprecated starting in v3 ([4ea3c27](https://github.com/watson-developer-cloud/node-sdk/commit/4ea3c27))
* remove module for converting training_data to csv ([dd534f6](https://github.com/watson-developer-cloud/node-sdk/commit/dd534f6))
* require filenames for `createStopwordList` in discovery and `convertToHTML` in compare comply ([8f7c62f](https://github.com/watson-developer-cloud/node-sdk/commit/8f7c62f))
* stop using cookies in requests ([09e0e91](https://github.com/watson-developer-cloud/node-sdk/commit/09e0e91))


### Features

* **discovery:** add new methods: `createTokenizationDictionary`, `deleteTokenizationDictionary`, and `getTokenizationDictionaryStatus` ([d5ba660](https://github.com/watson-developer-cloud/node-sdk/commit/d5ba660))
* **discovery:** new parameters added to match updates to the service ([838b044](https://github.com/watson-developer-cloud/node-sdk/commit/838b044))
* add `sort` query parameter to `getWorkspace()` ([1df75ac](https://github.com/watson-developer-cloud/node-sdk/commit/1df75ac))
* add model `MessageContextSkill` ([15a4c7f](https://github.com/watson-developer-cloud/node-sdk/commit/15a4c7f))
* new error formatter, provides the same information regardless of service ([c324ab0](https://github.com/watson-developer-cloud/node-sdk/commit/c324ab0))
* The SDK now returns a Promise for all methods if a callback is not specified. Callbacks can still be used for backwards compatibility. ([fd6e20b](https://github.com/watson-developer-cloud/node-sdk/commit/fd6e20b))


### BREAKING CHANGES

* **visual_recognition:** For `updateClassifier` and `createClassifier`, the parameter `{classname}_positive_examples` is changed to a map called `positive_examples` with classnames as keys.

See the migration guide, UPGRADE-4.0.md, for more information.
* Node 4 will no longer be supported, considered during development, or tested with.

To migrate your code, upgrade to a newer major version of Node.
* **assistant-v2:** For `updateValue`, parameter `new_type` is changed to `new_value_type`. For `updateDialogNode`, parameter `new_type` is changed to `new_node_type`.
* These method renames are breaking changes. Update the method names to migrate your code.
* There is no more `index.ts` file, so importing with `require('watson-developer-cloud')` will no longer work.

To migrate your code, import only the services that you need, e.g. `require('watson-developer-cloud/speech-to-text/v1')`.

Using the file `sdk.ts` to export all of the services for browserification
* The methods `createStopwordList` in discovery and `convertToHTML` in comply comply now have new, required parameters

To migrate your code, include the parameter `stopword_filename` for `createStopwordList`, and `filename` for `convertToHTML`
* **assistant-v1:** The Assistant v1 parameter `export` is now `_export` is all instances.

To migrate your code, change any use of the `export` parameter to `_export`.
* The SDK used to document and allow array values for these parameters, converting them to strings to be sent to the service.

To migrate your code, convert any array values for these parameters to comma-separated values in a string.
* The module `json-training-to-csv` is no longer available.

To migrate your code, provide `training_data` to NLC as a CSV file.
* Cookies will no longer be sent or stored in requests. This should have very little impact on usage but is techincally a breaking change.

This affects internal functionality but has no effect on client code.
* Errors objects returned from service errors are now different

To migrate your code, see the upgrade guide for the new error structure:
* Network responses received in callback function may now have different structures (results and errors). Requests no longer return a Stream.

See the UPGRADE-4.0.md file for more information.
* **personality-insights:** Personality Insights v2 is no longer available in the SDK

To migrate your code, use Personality Insights v3:
* **compare-comply:** Parameter `model_id` has been changed to `model` for the following methods: convertToHtml, classifyElements, extractTables, compareDocuments, deleteFeedback, getFeedback, createBatch, and updateBatch
* **speech-to-text:** Deprecated methods in Speech to Text are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/speech-to-text/api/v1/node.html?node
* **text-to-speech:** Deprecated methods in Text to Speech are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/text-to-speech/api/v1/node.html?node
* **visual-recognition:** Deprecated methods in Visual Recognition are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/visual-recognition/api/v3/node.html?node
* **tone-analyzer:** Deprecated methods in Tone Analyzer are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/tone-analyzer/api/v3/node.html?node
* **personality-insights-v3:** Deprecated methods in Personality Insights v3 are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/personality-insights/api/v3/node.html?node
* **natural-language-understanding:** The `version_date` parameter in Natural Language Understanding is no longer supported.

To migrate your code, use the parameter name `version` instead.
* **natural-language-classifier:** Deprecated methods in Natural Language Classifier are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/natural-language-classifier/api/v1/node.html?node
* **discovery:** Deprecated methods in Discovery are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/discovery/api/v1/node.html?node
* **conversation:** The Conversation service will no longer be available

To migrate your code, use the Assistant v1 or v2 service.
* **language-translator-v2:** The Language Translator V2 service will no longer be available

To migrate your code, use the Language Translator V3 service.
* **dialog:** The Dialog service will no longer be available

To migrate your code, use the Assistant v1 or v2 service.
* Support for the `api_key` parameter has been removed.

For instances of Visual Recognition, use `iam_apikey` to authenticate.
* **discovery:** The name of the model `QueryResultResultMetadata` has been changed to `QueryResultMetadata`

To migrate your code, use the model `QueryResultMetadata` instead of `QueryResultResultMetadata`:

## [3.18.4](https://github.com/watson-developer-cloud/node-sdk/compare/v3.18.3...v3.18.4) (2019-03-28)


### Bug Fixes

* allow users to use `iam_apikey` when authenticating for icp ([cdccbc1](https://github.com/watson-developer-cloud/node-sdk/commit/cdccbc1))

## [3.18.3](https://github.com/watson-developer-cloud/node-sdk/compare/v3.18.2...v3.18.3) (2019-03-19)


### Bug Fixes

* expose token manager from core code as a module ([4376e7c](https://github.com/watson-developer-cloud/node-sdk/commit/4376e7c))

## [3.18.2](https://github.com/watson-developer-cloud/node-sdk/compare/v3.18.1...v3.18.2) (2019-03-15)


### Bug Fixes

* make `access_token` an allowable query parameter in recognize / synthesize streams ([a2ad09e](https://github.com/watson-developer-cloud/node-sdk/commit/a2ad09e))

## [3.18.1](https://github.com/watson-developer-cloud/node-sdk/compare/v3.18.0...v3.18.1) (2019-02-14)


### Bug Fixes

* use dotenv v5 to maintain node 4.x compatibility ([c311651](https://github.com/watson-developer-cloud/node-sdk/commit/c311651))

# [3.18.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.17.0...v3.18.0) (2019-02-06)


### Features

* **compare-comply:** new constants and new model properties added ([d9dc7cc](https://github.com/watson-developer-cloud/node-sdk/commit/d9dc7cc))
* **discovery:** add method `getStopwordListStatus` ([ea9eaf9](https://github.com/watson-developer-cloud/node-sdk/commit/ea9eaf9))
* **speech-to-text:** optional parameter `force` added to the method `upgradeAcousticModel` ([ceaa843](https://github.com/watson-developer-cloud/node-sdk/commit/ceaa843))

# [3.17.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.16.1...v3.17.0) (2019-02-04)


### Features

* enable reading credentials from ibm-credentials.env file ([ce02aa8](https://github.com/watson-developer-cloud/node-sdk/commit/ce02aa8))

## [3.16.1](https://github.com/watson-developer-cloud/node-sdk/compare/v3.16.0...v3.16.1) (2019-01-19)


### Bug Fixes

* fix `getTransactionId` method for the `RecognizeStream` class ([e5bbe2c](https://github.com/watson-developer-cloud/node-sdk/commit/e5bbe2c))

# [3.16.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.15.4...v3.16.0) (2019-01-17)


### Features

* **discovery:** add methods `createStopwordList`, `deleteStopwordList`, `createGateway`, `deleteGateway`, `getGateway`, and `listGateways` ([8a6753e](https://github.com/watson-developer-cloud/node-sdk/commit/8a6753e))
* **speech-to-text:** new methods added: addGrammar, deleteGrammar, getGrammar, listGrammars ([7ab567a](https://github.com/watson-developer-cloud/node-sdk/commit/7ab567a))
* **visual-recognition:** parameter `accept_language` added to method `detectFaces` ([82190c7](https://github.com/watson-developer-cloud/node-sdk/commit/82190c7))

## [3.15.4](https://github.com/watson-developer-cloud/node-sdk/compare/v3.15.3...v3.15.4) (2019-01-15)


### Bug Fixes

* fix bug that prevents `audio` from being sent as a buffer for `recognize` ([3f97b80](https://github.com/watson-developer-cloud/node-sdk/commit/3f97b80))

## [3.15.3](https://github.com/watson-developer-cloud/node-sdk/compare/v3.15.2...v3.15.3) (2019-01-15)


### Bug Fixes

* package.json to reduce vulnerabilities ([e61d1de](https://github.com/watson-developer-cloud/node-sdk/commit/e61d1de))

## [3.15.2](https://github.com/watson-developer-cloud/node-sdk/compare/v3.15.1...v3.15.2) (2019-01-14)


### Bug Fixes

* query parameters no longer cause text-to-speech over websockets to crash ([775e6d2](https://github.com/watson-developer-cloud/node-sdk/commit/775e6d2))
* Remove the `disabled` property from `CreateDialogNode`. It is for internal use only. ([4b72d0e](https://github.com/watson-developer-cloud/node-sdk/commit/4b72d0e))

## [3.15.1](https://github.com/watson-developer-cloud/node-sdk/compare/v3.15.0...v3.15.1) (2019-01-07)


### Bug Fixes

* add `disabled` property to CreateDialogNode ([41cd8dc](https://github.com/watson-developer-cloud/node-sdk/commit/41cd8dc))
* add `user_defined` property to MessageOutput model ([ea28bf3](https://github.com/watson-developer-cloud/node-sdk/commit/ea28bf3))

# [3.15.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.14.0...v3.15.0) (2018-12-07)


### Features

* add support for Compare and Comply service ([fa22ae5](https://github.com/watson-developer-cloud/node-sdk/commit/fa22ae5))
* **discovery:** adds new model, RetrievalDetails ([1821719](https://github.com/watson-developer-cloud/node-sdk/commit/1821719))
* **natural-language-understanding:** new properties added to models to match the service ([3bf1e5e](https://github.com/watson-developer-cloud/node-sdk/commit/3bf1e5e))

# [3.14.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.13.1...v3.14.0) (2018-12-06)


### Features

* **text-to-speech:** add support for using `synthesize` over a websocket connection ([94ba896](https://github.com/watson-developer-cloud/node-sdk/commit/94ba896))

## [3.13.1](https://github.com/watson-developer-cloud/node-sdk/compare/v3.13.0...v3.13.1) (2018-11-26)


### Bug Fixes

* **discovery:** update mis-defined parameters to match the service ([d1fb9a9](https://github.com/watson-developer-cloud/node-sdk/commit/d1fb9a9))
* **speech-to-text:** `content_type` is no longer a required parameter for `recognize()` or `createJob()` (it is now optional) ([d64c06a](https://github.com/watson-developer-cloud/node-sdk/commit/d64c06a))
* **speech-to-text:** add support for `language_customization_id` parameter to the WebSockets method, deprecate `customization_id` ([bf2cd68](https://github.com/watson-developer-cloud/node-sdk/commit/bf2cd68))

# [3.13.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.12.0...v3.13.0) (2018-10-30)


### Features

* **discovery:** add new methods: `createTokenizationDictionary`, `deleteTokenizationDictionary`, and `getTokenizationDictionaryStatus` ([d5ba660](https://github.com/watson-developer-cloud/node-sdk/commit/d5ba660))

# [3.12.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.11.1...v3.12.0) (2018-10-10)


### Features

* **discovery:** new parameters added to match updates to the service ([838b044](https://github.com/watson-developer-cloud/node-sdk/commit/838b044))

## [3.11.1](https://github.com/watson-developer-cloud/node-sdk/compare/v3.11.0...v3.11.1) (2018-09-28)


### Bug Fixes

* **icp:** disabling ssl verification now works for websocket connection ([f8466c8](https://github.com/watson-developer-cloud/node-sdk/commit/f8466c8))

# [3.11.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.10.0...v3.11.0) (2018-09-24)


### Features

* add support for assistant v2 ([8a99676](https://github.com/watson-developer-cloud/node-sdk/commit/8a99676))

# [3.10.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.9.1...v3.10.0) (2018-09-13)


### Features

* new languages models supported for speech to text ([a2669dd](https://github.com/watson-developer-cloud/node-sdk/commit/a2669dd))
* support authenticating with ibm cloud private ([0d1774c](https://github.com/watson-developer-cloud/node-sdk/commit/0d1774c))

## [3.9.1](https://github.com/watson-developer-cloud/node-sdk/compare/v3.9.0...v3.9.1) (2018-08-30)


### Bug Fixes

* add an optional filename parameter for methods accepting a file ([9a6cb59](https://github.com/watson-developer-cloud/node-sdk/commit/9a6cb59))

# [3.9.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.8.0...v3.9.0) (2018-08-15)


### Features

* **regenerate:** add methods for new discovery metrics endpoints ([f396eca](https://github.com/watson-developer-cloud/node-sdk/commit/f396eca))

# [3.8.0](https://github.com/watson-developer-cloud/node-sdk/compare/v3.7.1...v3.8.0) (2018-08-07)


### Features

* regenerate service sdks 7/30/18 ([0f95a92](https://github.com/watson-developer-cloud/node-sdk/commit/0f95a92))

## Version 3.7.0
7/12/18
* Operations added for `Credentials` resource (Discovery)

## Version 3.6.0
7/11/18
* Support base_model_version parameter in `recognize()` (Speech-to-Text)
* Authentication service now supports returning IAM tokens

## Version 3.5.1
6/25/18
* Fixes bug retrieving Assistant credentials from VCAP services
* Fixes bug that prevented IAM authentication with Speech to Text websockets

## Version 3.5.0
6/12/18
* Support for Language Translator V3

## Version 3.4.5
6/4/18
* Fixes bug for Visual Recognition service that caused authentication errors when reading credentials from VCAP Services or environment files

## Version 3.4.3
5/31/18
* Fixes bug for Visual Recognition service that gave the incorrect URL for CF instances. Old service instances no longer have to specify the URL
* General IAM authentication URL changed from https://iam.ng.bluemix.net/identity/token to https://iam.bluemix.net/identity/token
* `deleteUserData()` methods in Speech to Text, Text to Speech, Visual Recognition

## Version 3.4.2
5/18/18
* Updates dependencies to remove security vulnerability
* Adds methods `deleteUserData` to Assistant, Conversation, and Discovery

## Version 3.4.1
5/3/18
* Updates dependencies to be compatible with Node v10

## Version 3.4.0
4/26/18
* Support for custom headers https://github.com/watson-developer-cloud/node-sdk#sending-request-headers

* Support for retrieving HTTP response https://github.com/watson-developer-cloud/node-sdk#sending-request-headers

* Support for IAM tokens, which will be supported by services in future releases.

## Version 3.3.0
4/5/18
* Visual Recognition
  * New method `getCoreMlModel` adds support for CoreML
  * Breaking: `detectFaces` no longer supports identity information in the response.
    * `name`, `score`, `type_hierarchy` removed from response [Release notes](https://console.bluemix.net/docs/services/visual-recognition/release-notes.html#2april2018)

* Natural Language Classifier
 * New method 'classifyCollection`

Conversation/Assistant
 * timestamp parameters `created` and `updated` are optional, not required
 * `context` parameter is optional in `message`




## Version 3.2.1
3/15/18
* Renames Assistant from v1-generated to v1

## Version 3.2.0
3/15/18
* Adds Assistant Service (Conversation has been renamed to Assistant)

## Version 3.1.1
3/8/18
* Adds warnings to methods with changed names
* Ensures that new parameters are passed into methods when calling them using the older format used in the adapters.

## Version 3.1.0
3/7/18

### **Breaking changes:**

Speech to text
- param `audio` is now required in recognize method
- methods `createSession`, `deleteSession`, `getSessionStatus` deprecated

### **Non Breaking:**

- All code is regenerated to reflect the newest versions of all services
- Methods with exclusively text/plain body parameters now are correctly generated
- Fixes linting in build
   - Adds new linter, tslint for typescript files

SpeechToText:
- `addAudio` method: param `audio_resource` is now type ReadableStream|FileObject|Buffer instead of ByteArray[]
- `transfer-encoding` is removed from `recognize` method

Conversation
- `include_audit` parameters are now supported
- `node_visited_details` is now supported

Tone Analyzer
- Adds support for `content_language` for `tone_chat` endpoint

Visual Recognition
- Items in ‘parameters’ are now top level params

## [v3.0.7](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v3.0.7)
 * services use `version` instead of `version_date` and should pass in dates directly such as `'2017-02-27'` instead of calling date constants.

## [v3.0.6](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v3.0.6)
 * All .ts files are removed from the npm package
 * Fixes issue of enforcing our typescript compiler settings when other typescript projects use our package
 * All instances of ReadableStream changed to NodeJs.ReadableStream, blob type added to /lib/, both changes done to correctly link these types for typescript users

## [v3.0.5](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v3.0.5)
 * [User-Agent] in header is no longer overwritten but instead appended, this change only affects metrics of this SDK

## [v3.0.4](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v3.0.4)
 * Fixed bug in visual recognition to correctly use owners parameter
 * Fixed bug in NLU where environment variables storing credentials were not read when running locally
 * Dependencies updated to fix security vulnerabilities

## [v3.0.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v3.0.3)

* Added support for customization_weight or acoustic_customization_id  in speech-to-text/v1


## Version 3.0

_2017-11-29_

_This version contains several breaking changes._

Version 3.0 introduces automatically generated client code. The client code is generated from [Swagger](https://swagger.io/). Several deprecated services have been removed from this release. Furthermore, language has been changed from *NodeJS* to *TypeScript*, and file extensions have been changed from `*.js` to `*.ts`

Services that are **not affected** in this release:

 * Authorization
 * Dialog

Services that are **affected** in this release:

 * Conversation
 * Discovery
 * Language Translator
 * Natural Language Classifier
 * Natural Language Understanding
 * Personality Insights
 * Text to Speech
 * Tone Analyzer
 * Speech to Text
 * Visual Recognition

Services that are **removed** in this release:

 * Alchemy Language
 * Alchemy Data News
 * Document Conversion
 * Retrieve and Rank
 * Tradeoff Analytics

Upon upgrading the SDK, follow the migration guide [here](https://github.com/watson-developer-cloud/node-sdk/wiki/Migration-Guide). 

## [v2.39.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.39.0)
* Added support for `highlight` param in `DiscoveryV1.query()`

## [v2.38.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.38.0)
* DiscoveryV1.VERSION_DATE_2017_08_01 = '2017-08-01';

## [v2.37.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.37.0)
* `ToneAnalyzerV3.tone()` now accepts `language` parameter to specify `content-language` header for input.

### [v2.36.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.36.1)
* Improved formatting of Alchemy Language error messages

## [v2.36.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.36.0)
* Added `ConversationV1.VERSION_DATE_2017_05_26`

## [v2.35.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.35.0)
* Added `DiscoveryV1.updateJsonDocument` to compliment`addJsonDocument()`

## [v2.34.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.34.0)
* Added `DiscoveryV1.addJsonDocument()` method to make uploading in-memory JSON structures easier
* Fixed bug in `DiscoveryV1.addDocument()` that prevented setting custom filenames [#474](https://github.com/watson-developer-cloud/node-sdk/issues/474)

## [v2.33.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.33.0)
* Added support for `fuzzy_match` param in Conversation entities methods
* Added support for JSON metadata when adding documents to Discovery [#474](https://github.com/watson-developer-cloud/node-sdk/issues/474)

### [v2.32.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.32.1)
* Discovery: fix createEnv with size 0

## [v2.32.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.32.0)
* Add natural_language_query and passages parameters to Discovery.query()
* Fix collection name param for Discovery.createCollection ([#https://github.com/watson-developer-cloud/node-sdk/issues/457](https://github.com/watson-developer-cloud/node-sdk/issues/457))

### [v2.31.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.30.1)
* Bumped `solr-client` dependency to latest version

### [v2.31.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.30.1)
* Added VisualRecognitionV3.VERSION_DATE_2016_05_20 constant

## [v2.31.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.31.0)
* Added support for sort param on DiscoveryV1.query() ([#446](https://github.com/watson-developer-cloud/node-sdk/pull/446))
* Added DiscoveryV1.VERSION_DATE_2017_04_27
* Made utterances a top-level param for ToneAnalyzerV3.tone_chat() ([#439](https://github.com/watson-developer-cloud/node-sdk/pull/439))

## [v2.30.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.30.0)
* Added support for Conversation entities (w/ values and synonyms) and logs
* Added support for updating Discovery environments

## [v2.29.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.29.0)
* Added tone_chat endpoint for Tone Analyzer
* Added support for WebM and Ogg/Vorbis formats to Speech to Text

### [v2.28.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.28.1)
* Fixed Visual Recognition credentials in dedicated environments ([#436](https://github.com/watson-developer-cloud/node-sdk/issues/426))

## [v2.28.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.28.0)
* bumped vcap_services library version
* Fixed bug with STT async recognition & multiple callback events
* Moved changelog to wiki

### [v2.27.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.27.1)
* Fixed issue when creating STT Async recognize job with multiple callback events ([#415](https://github.com/watson-developer-cloud/node-sdk/issues/415))

## [v2.27.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.27.0)
* Add support for Conversation Counter Examples API

### [v2.26.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.26.1)
* Correct name of `events` parameter in STT async recognize.

## [v2.26.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.26.0)
* Conversation sorting and pagination for workspaces, intents, and examples

### [v2.25.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.25.1)
* Natural Language Understanding: fixed credentials pulling from bluemix

## [v2.25.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.25.0)
* Natural Language Understanding: new version_date and addition of listModels() and deleteModel() methods

### [v2.24.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.24.1)
* STT RecognizeStream now exposes Transaction ID

### [v2.23.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.23.1)
* Restored support for Node.js 4.0-4.4

## [v2.23.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.23.0)
* Added support for Conversation intents and examples

### [v2.22.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.22.2)
* Speech to Text createRecognitionJob() now accepts all params from .recognize()
* Speech to Text getRecognitionJobs() accepts an optional params object in order to match the signature of the rest of the API

### [v2.22.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.22.1)
* Make callback_url optional for Speech to Text createRecognitionJob()

## [v2.22.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.22.0)
* Speech to Text Asychronous API support

## [v2.21.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.21.0)
* Added support for sort paramater in SpeechToTextV1.getWords()
* Added updateDocument() method to DiscoveryV1
* Fixed up internal code to avoid using the deprecated `new Buffer(...)` API
* Improved documentation

## [v2.20.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.20.0)
* Conversation VersionDate 2017-02-03

## [v2.19.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.19.0)
* Added support for find_preferable_options flag in Tradeoff Analytics

## [v2.18.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.18.0)
* Added various methods to Conversation service to create and manage workspaces
* Prevent docs site files from being included in npm releases

### [v2.17.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.17.1)
* Fixed bug in STT getWords method (#390)

## [v2.17.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.17.0)
* No API changes, but significant internal changes. Should behave exactly the same, but releasing as a standalone version out of caution.

## [v2.16.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.16.0)
* Added NaturalLanguageUnderstandingV1
* Added support for pulling SERVICE_NAME_URL from enviroment properties along with username and password (or api key)

### [v2.15.5](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.15.5)
* stt.whenCustomizationReady() no longer incorrectly requires that a corpus be added. (#382)
* various JSDoc corrections

### [v2.15.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.15.2)
* Fix slightly-incorrect URL in Language Translator V2 example and error message

## [v2.15.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.15.0)
* SDK now emits missing parameter errors on returned stream if no callback is supplied (#368 / #377)

### [v2.14.8](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.8)
* Fix DocumentConversion#convert() to accept config params as documented in api ref
* Fix param checking on various TTS customization methods

### [v2.14.6](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.6)
* Fix incorrect error messages (#373)

### [v2.14.5](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.5)
* Fix issue where adding a document as buffer/string fails in Discovery v1 (#370)
* Fix issue where STT RecognizeStream could fail to emit speaker_labels event in rare circumstances

### [v2.14.4](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.4)
* Update jsdoc for Speech to text

### [v2.14.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.3)
* Expose discovery v1 in index

### [v2.14.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.2)
* Same fix for language translation

### [v2.14.7](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.7)
* Fixed DocumentConversionV1.convert() to accept config params as a seperate object, matching api ref documentation (#375)

### [v2.14.6](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.6)
* Fix regression in error handler that would incorrectly overwrite error message in some cases

### [v2.14.5](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.5)
* Fix isue where STT RecognizeStream could fail to emit a speaker_labels events in certain rare circumstances
* Added Discovery add createEnvironment and deleteEnvironment methods
* Fix Discovery addDocument when adding a Buffer

### [v2.14.4](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.4)
* Update JSDOc for speech to Text

### [v2.14.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.3)
* Expose discovery v1 in index.js

### [v2.14.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.2)
* Fix content type for language translation (#362)

### [v2.14.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.1)
* Fix content type for language translator (#362)

## [v2.14.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.14.0)
* Added Discovery V1 (general availability release)

## [v2.13.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.13.0)
* Added STT whenCorporaAnalyzed() helper, #353
* Bumped dependencies

## [v2.12.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.12.0)
* Added Speech to Text speaker_labels support, added new speaker_labels event to RecognizeStream

### [v2.11.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.11.1)
* Fixed main file path in package.json
* added a conversation example

## [v2.11.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.11.0)
* Added several methods and a version_date constant to DiscoveryV1Experimental

### [v2.10.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.10.1)
* Added version_date constants to ConversationV1, updated docs, examples, etc to latest version_date.

### [v2.9.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.9.1)
* Added customization_id support to STT RecognizeStream

## [v2.9.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.9.0)
* Allow VisualRecognitionV3.classify() to accept Buffers (with automatic content-type detection) or Objects with specified filename or content-type
* Improve Visual Recognition error formatting
* Document Conversion: Remove forced utf-8 charset header for html files

### [v2.8.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.8.3)
* Fixed issue with formatting multiple keywords for STT recognize() - #261

### [v2.8.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.8.1)
* Added `getCredentials()` method to base service, primarily for use with AuthorizationV1()

### [v2.7.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.7.1)
* dependency fix

## [v2.7.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.7.0)
* Speech to Text customization support

### [v2.6.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.6.1)
* Ensure errors are always instanceof Error
* Doc improvements

## [v2.6.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.6.0)
* Added support for Personality Insights V3

## [v2.5.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.5.0)
* Split LanguageTranslationV2 into a seperate service from LanguageTranslatorV2, added a warning when translator service is used without specifying a url since the default is currently incorrect.
* Fixed bug with setting user-agent header

### [v2.4.7](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.7)
* Fixed issue with send data on non-open WebSockets for STT RecognizeStream - see #322

### [v2.4.6](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.6)
* Fixed credential bugs in R&R and STT

### [v2.4.5](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.5)
* Fixed bug where credentials could be lost when calling certain methods in Language Translator and Dialog services

### [v2.4.4](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.4)
* Doc-only changes, focused on Language Translation/Translator differences and temporary workaround

### [v2.4.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.3)
* Fix issue with automatically loading Alchemy* credentials from the Bluemix environment

### [v2.4.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.1)
* Revert part of credential change: Alchemy* services again use `apikey` while visual recognition uses `api_key`
  (Most endpoints accept either, but this split follows the documented API for each service.)

## [v2.4.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.4.0)
* Added support for Visual Recognition similarity search beta
* Refactored handling of credentials to support constraints in similarity search

## [v2.3.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.3.0)
* Add support for RetrieveAndRankV1.rank() answers param

## [v2.2.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.2.0)
* Added support for creating and managing TTS Customizations

### [v2.1.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.1.3)
* Deprecation warning for Dialog
* Added TTS .voice() and .pronunciation() methods
* Added support for `customization_id` to existing TTS methods
* Typo and JSDoc fixes
* Fixed bug with pulling api key from env properties for alchemy services

### [v2.1.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.1.2)
* Added profanity_filter support to STT RecognizeStream

### [v2.1.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.1.1)
* Corrected some examples to use - instead of _
* Renamed NLC folder to use - instead of _

## [v2.1.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.1.0)
* Updated AlchemyLanguageV1.emotion() to support new targeted_emotion parameter & endpoint
* Added Conversation/Tone Analyzer integration example
* Updated Readme & Examples to use newer constructor style

### [v2.0.3](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.0.3)
* Use actual Error instances for errors (#298)

### [v2.0.2](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.0.2)

* Added support for the `intents`, `entities` and `output` parameters in ConveersationV1.message()
* Removed sunset services: Concept Insights and Relationship Extraction
* Dependency bump


### [v2.0.1](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.0.1)

* Added VisualRecognitionV3.retrainClassifier() to facilitate updating of existing custom classifiers
* Added support for `alternate_intents` parameter in ConversationV1.message()


# [v2.0.0](https://github.com/watson-developer-cloud/node-sdk/releases/tag/v2.0.0)

* Breaking: prefer programatic (user-supplied) credentials over bluemix-provided ones (VCAP_SERVICES)
* New preferred method of instantiating services: `new watson.PersonalityInsightsV2({/*...*/});` instead of `watson.personality_insights({/*...*/});`. Older method still works
* Restructured code to support client-side usage via tools such as Browserify and Webpack. Most services support CORS; this will be documented and the remaining service teams will be nagged.
* Added a changelog to capture both major breaking changes and smaller


# Breaking Changes for v1.0

Several breaking changes were introduced with the v1.0.0 release:

  * Experimental and Beta services now require the appropriate tag to be added to their version:
    * Concept Expansion `v1` is now `v1-beta`
    * Question and Answer `v1` is now `v1-beta`
    * Relationship Extraction `v1` is now `v1-beta`
    * Tone Analyzer `v3` is now `v3` (latest) or `v3-beta` (compatibility with old Beta plan)
    * Visual Insights `v1` is now `v1-experimental`
    * Visual Recognition `v1` is now `v1-beta`
  * Speech to Text gained a new `createRecognizeStream()` method replacing the existing live streaming methods with a simpler Read/Write stream.
    The older methods are still available in v1.0 but each log a deprecation warning (unless `{silent: true}` is passed in) and will be removed from a future release.
    The affected methods are:
    * `recognizeLive()`
    * `observeResult()`
    * `getRecognizeStatus()`
  * The Document Conversion API has been reduced to a single `convert()` method; it no longer offers batch conversion or cloud storage of files.
  * Several deprecated services have been removed:
    * Message Resonance
    * Tone Analyzer v1 and v2 (replaced by v3)
    * Search (replaced by Retrieve and Rank)
  * Dropped support for node.js v0.10.x (For reference: the WDC Node.js SDK now officially support the latest 0.12, LTS, and Stable releases of Node.js.)