Cancel allow to manually interrupt a promise execution.
The promise becomes rejected with a CancellationError.

var xhr, promise;
promise = RSVP.Promise(
  // Resolver function
  function (done, fail) {
    xhr = new XMLHttpRequest();
    xhr.open("GET", url);
    xhr.send();
  },
  // Canceller function
  function () {
    xhr.abort();
  },
)
promise.cancel();

Fix npm integration

version bump

fixing tests for rethrow in IE 6,7,8 as well as phantom/node

Rsvp#rethrow

Rethrow makes sure that any exception in your promise chain won't
swallowed:

getJSON('/posts.json')
    .then(handlePost)
    .fail(RSVP.rethrow)

You can also to chain it further, like so:

getJSON('/posts.json')
    .then(handlePost)
    .fail(RSVP.rethrow)
    .then(null, handleRejection)

adding promise#fail

- toString.call([]) angers IE, use Object.prototype.toString instead
- getPrototypeOf polyfil

toString.call([]) fails while the Object.prototype.toString.call([]) works

upload passing builds to s3

async: use three args for addEventListener

The third argument for `addEventListener` and `removeEventListener`
is supposed to be optional, defaulting to `false`, but some browsers
(notably older versions of FireFox) require it.

See https://github.com/thinkpixellab/PxLoader/issues/5 and
https://developer.mozilla.org/en-US/docs/Web/API/EventTarget.removeEventListener

some a+ 1.1 spec fixes.

with a `TypeError' as the reason.

Fix callback assimilation

Run reduce tests only in node

Add multiple resolve test

This was handled for some code paths but not all.

Removed the double try/catch

This allows the VM to optimize correctly.