Unregister Selectors #13

I'm going to use this in a production environment. Is there any chance you would either add, or accept a PR for unregistering selectors?

Use case: For a single page app, I'm thinking of writing a Grunt task that will create a JSON object with all of my possible selectors like this:

{
    ".elem1": {
        "min-width": [ "600px" ],
        "max-width": ["700px"]
    },
    ".elem2": {
        "min-height": ["20em"]
    },
    ".elem3": {
        "min-width": ["20em", "30em", "40em"]
    }
}

I'm not going to pass a laundry list of selectors to elementQuery, but instead, each of my Backbone Views will be responsible for:

1. Registering new elementQuery selectors used by the view and calling refresh() by passing true.
   • Basically, I will be listing the query selectors used for this view like elQueries: ['.elem1', '.elem2']
   • Just after the view has been rendered into the DOM, I will match the selectors from elQueries to the Grunt generated JSON object to register only selectors needed for a given view.
2. Unregistering elementQuery selectors that are no longer on the page (ie, when the view closes)

How does everyone feel about something like this?