Add target to sentiment analysis

Update docs

Decomission the lib versions endpoint.

Update documentation about async.

Increase version

Do not parse the returned JSON if asynchronous request still in progress.

Fix ASR documentation.

Remove ad generation endpoint from documentation.

Remove some deprecated generation parameters

Ignore English language with multilingual addon.

Remove article generation.

Update multilingual addon examples.

Fix documentation.

Implement speech synthesis

Implement Dolphin is_instruct parameter