dev-notes
Ember.computed.apply
When a Computed Property needs to observe a long list of properties, especially if that list can be generated at runtime, it can save a lot of effort and maintenance headaches to generate that CP dynamically. An example from Ghost's editor controller mixin [https://github.com/TryGhost/Ghost/blob/b748137a101f3862589aeddec412bcc6b9d74cde/