Add EventEmitter "removeListener" event

[justmoon]

When an event listener is removed the EventEmitter class should fire the "remoteListener" event.

This was added in Node.js 0.10, see:

nodejs/node-v0.x-archive@84221fd

Please let me know if this feature is desired and if so I'll gladly provide a pull request.

[defunctzombie]

This feature is desired. Are you currently using webpack or browserify? If you are using browserify, the core shim for events lives here:
https://github.com/shtylman/node-browser-resolve/blob/master/builtin/events.js

In the short future, it will live in a separate module and this module will just bring the various modules together and browser-resolve will no longer be responsible for the shims.

[justmoon]

Oh hai, a familiar face. :)

Are you currently using webpack or browserify?

Webpack, I came here from webpack/webpack@c1592df

Will have a pull request for you tomorrow.

[sokra]

It should have all features from the stable node core lib public API. 😄 But that's still a long way...