# v13.1.0 - Allow setting `SocketEngineSpec.extraHeaders` after init. - Deprecate `SocketEngineSpec.websocket` in favor of just using the `SocketEngineSpec.polling` property. # v13.0.1 - Fix not setting handleQueue on `SocketManager` # v13.0.0 Checkout out the migration guide in Usage Docs for a more detailed guide on how to migrate to this version. What's new: --- - Adds a new `SocketManager` class that multiplexes multiple namespaces through a single engine. - Adds `.sentPing` and `.gotPong` client events for tracking ping/pongs. - watchOS support. Important API changes --- - Many properties that were previously on `SocketIOClient` have been moved to the `SocketManager`. - `SocketIOClientOption.nsp` has been removed. Use `SocketManager.socket(forNamespace:)` to create/get a socket attached to a specific namespace. - Adds `.sentPing` and `.gotPong` client events for tracking ping/pongs. - Makes the framework a single target. - Updates Starscream to 3.0