Release 7.4.0

BC breaks:

This version introduces some potential BC breaks:

• Using a deprecated parameter is notified triggering a E_USER_DEPRECATED error (e.g. using the type parameter will generate a Specifying types in urls has been deprecated deprecation message).
• When delete with an empty id a Missing404Exception exception is thrown. Previously it was a InvalidArgumentException.

Changelog:

• Added the code generation for endpoints and namespaces based on the REST API specification
  of Elasticsearch. This tool is available in util/GenerateEndpoints.php #966
• Fixed the asciidoc endpoints documentation based on the code generation using Sami project #966
• All the experimental and beta APIs are now signed with a @note tag in the phpdoc section (e.g. $client->rankEval()). For more information read the experimental and beta APIs section in the documentation #966
• Removed AlreadyExpiredException since it has been removed from Elasticsearch with elastic/elasticsearch#24857 #954