not all ajax should be fully serialized. allow setting. default 'GET' to not be
add new test to ensure dequeue still can keep promises
success and error options removed in favor of done and fail
really meant some in the ajax queue could be in parallel not to skip
dequeue called only when parallel request is current up in the queue
Update relation .find() method to not throw.
Added a test for `Collection::find()`
Merge pull request #525 from spine/find-relation-patch

Collection::find() should not throw errors for missing records
Merge pull request #524 from spine/parallelAjax

not all ajax should be fully serialized. allow setting. default 'GET' to...
add spine binding module and test from #491
move add on tests into single page
update zepto lib for tests
Merge pull request #526 from spine/bindings

Bindings
updates to history file
Added support for multiple Spine.Route instances
Refactor Spine.Stack to use discrete router instances
Merge branch 'relation-fetch' into dev