remove "modelValueAware" mixin to use Backbone.input.getModel and Backbone.input.setModel instead
for modelPopulate, change getModelValue to just getValue and getUIModelValue to getDOMValue
add additional method signatures for modelPopulate

*all arguments are optional*
(components, callback, options, model)
components must be Array
callback must be function
options must be object
model must either be false or extend Backbone.Model
fix modelPopulate bug
Update release notes
v0.12.0