Add-ons [MMO] Centrifugo 2.3.6

• Reworking to 1 single instance
• Added auxiliary utility for cleaning old messages from DOM
• Added unsubscribe from channel, mechanism for resubscribing to channel
• Added channel system
• Added ability to process custom events
• Added ability to extend events that are sent via websocket

• Add new option Channel Instance ID

Now the connection token is generated on all pages, if you want to override you can set your parameters in the constructor for the token, host and path.

• Added a check for subscribing to an existing channel.