Diff: https://github.com/socketio/socket.io/compare/2.2.0...2.3.0

Diff: https://github.com/socketio/socket.io-parser/compare/3.3.0...3.4.0

Fix documentation about default origins value. The default should read `*:*` instead of `*

Diff: https://github.com/socketio/engine.io/compare/3.3.1...3.4.0

There was no obvious reason to use BSD instead of MIT for that very basic chat app.

Closes #3411

Accessing the clients of a dynamic namespace throws because doing `io.of(/your-regex/g)` returns...

- engine.io: https://github.com/socketio/engine.io/compare/3.2.0...3.3.1
- socket.io-parser: htt...

Reference: https://github.com/nodejs/Release

`user is typing` messages were not properly removed

Closes #3291

To match the behaviour on the namespace (see #2628).

The previous version was confusing, as `socket.to(socket.id).emit()` does nothing.

Fixes #3220

This follows #3187, with a slightly different API.

A dynamic namespace can be created with:
...

Previously, the protocol was not taken in account, which caused the following behaviour:

```j...

When using a custom namespace with a middleware, the client did not receive the 'connect' event....

So that the call to the `has-binary` method can be skipped. Usage:

```
// with binary data
...

It seems packets could be delivered to wrong room in some case, if the
_rooms array was not res...

Fix "TypeError: Cannot convert undefined or null to object" when a
middleware is added before t...

Update badge to https://slackin-socketio.now.sh/badge.svg

Using a middleware could previously lead to a connecting client
receiving a connect event from ...

Includes the following (from engine.io changelog):

* [fix] Initialize the WebSocket server in...

Browserify doesn't support require.resolve, and as a consequence, makes nexe fail the compilatio...

Deleting properties is a v8 'optimization killer'