Defeatureify addon tree and use Ember.deprecate

* Using standard deprecation system (`Ember.deprecate`).
* Builds generated for production do not contain deprecations.
* Only raise deprecation when creation the CP, not once per item.
It is. Although I would like to generate, like ember does 3 versions of the library: 

* `ember-cpm.js` with warnings.
* `ember-cpm.prod.js` without warnings.
* `ember-cpm.min.js` without warnings and minified.