v1.5.1. Bugfix. Improvement.

- v1.5.1 January 24, 2013
	- Support for Backbone v0.9.10
		- Closes [pull request
#21](https://github.com/bevry/query-engine/pull/21) thanks to [Nicholas
Firth-McCoy](https://github.com/nfm)
	- Added backbone as a peerDependency