Client
- Changed stability of the package to Generally Available, was Beta.
- Updated APIs to the 7.11 specification
- Documentation moved from the README to elastic.co/guide
- Fixed encoding of arrays in query string to match Ruby on Rails
- Changed `body` parameter to describe the content of the body for multiple APIs
- Added the `X-Elastic-Client-Meta` HTTP header controlled by `meta_header` parameter
App Search
- Changed `body` parameter to `document_ids` for `delete_documents()` and `get_documents()` APIs
- Changed `body` parameter to `documents` for `index_documents()` and `put_documents()` APIs
- Changed `body` parameter to `source_engines` for `add_meta_engine_source()` and `delete_meta_engine_source()` APIs
- Changed `queries` parameter to `body` for `multi_search()` API
- Changed `body` parameter to `schema` for `put_schema()` API
- Changed `synonyms` parameter to `body` for `create_synonym_set()` and `put_synonym_set()` APIs
Workplace Search
- Added `create_analytics_event()` API
- Changed `content_source_key` parameter of all APIs to `content_source_id`
- Changed `body` parameter to `documents` for `index_documents()` API
- Changed `body` parameter to `document_ids` for `delete_documents()` API