Added a test for #226
Closes spine/spine#226
none of this coffescript map biz in the dev branch
Fix listenToOnce for stopListening

`obj` push to @listeningToOnce, because may conflict with `obj` by
@listenTo. Delete `obj` from @listeningToOnce if callbacked.
And fix stopListening bugs.
Merge pull request #448 from yaakaito/fix/stop-listening-for-once

[resubmit] When listenToOnce, Event can stopToListening
Merge pull request #449 from adambiggs/test-for-226

Closes #266
Removed whitespace and recompiled JS
Manual merge of #212
Manual merge of #218
Merge branch 'client-side-uuids' into working-master

Conflicts:
	lib/spine.map
	test/specs/model.relation.js