Implement queued requests for save function in the can/model.
Work on the request queue
Extract queued requests as a plugin
Fix issue with makeRequest, and add hasQueuedRequests to queue
Move queue tests to the plugin folder, make sure can/model test suite passes with queue plugin
Add backup ability to the queue plugin
Make requestQueue list an observe so it's live-bindable
Add tests for the queue
Add another test for the queue plugin
Merge pull request #308 from bitovi/queued_requests

Queued requests