1.1.0

• Add more PHP Documentor documentation about the goals of metadata in
  the \Gomoob\WebSocket\IWebSocketRequest interface and the
  \Gomoob\WebSocket\Request\WebSocketRequest class ;
• Add management of defaultMetadata in the \Gomoob\WebSoscket\IWebSocketClient interface and the
  \Gomoob\WebSocket\Client\WebSocketClient class ;
• Add management of defaultTags in the \Gomoob\WebSocket\IWebSocketClient interface and the
  \Gomoob\WebSocket\Client\WebSocketClient class ;
• Improve \Gomoob\WebSocket\Message\Message serialization ;
• Improve \Gomoob\WebSocket\Request\WebSocketRequest serialization ;
• Now all the factory methods can be calls with a factory(...) method or an alias create(...) method.