Upgrade to React 0.13.x

[basham]

Released on March 10, 2015.
http://facebook.github.io/react/blog/2015/03/10/react-v0.13.html

Should be able to replace react-with-addons.x.js with just react.x.min.js, since the only addon being used was for class name manipulations, which is now depreciated. Replace React.addons.classSet with classnames npm package.

[basham]

Notable things:

Breaking Changes

• Static methods (defined in statics) are no longer autobound to the component class
• React.addons.classSet is now deprecated. This functionality can be replaced with several freely available modules. classnames is one such module.

New Features

• Support for using ES6 classes to build React components; see the v0.13.0 beta 1 notes for details.
• Added new top-level API React.findDOMNode(component), which should be used in place of component.getDOMNode(). The base class for ES6-based components will not have getDOMNode. This change will enable some more patterns moving forward.

[basham]

Probably shouldn't switch to ES6 syntax, yet, until there's a well supported replacement for mixins. Too early to know what direction that will be. Mixins are used extensively for reflux and react-router.