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.

[fixes #66] Use setImmediate when available, which fixes newer node's

- Node >= 0.10.0 should used setImmediate over nextTick
- prefer argument passing then callback rebinding

fix test load order issue

Move from Rake-based build to Grunt