marionette v0.4.0 Release Notes

    • 💥 BREAKING: Rewrote the template manager to be async-template loading friendly
    • 💥 BREAKING: Dropping support for Backbone v0.5.3 and below
    • ➕ Added Marionette.Callbacks to manage a collection of callbacks in an async-friendly way
    • Guarantee the execution of app initializer functions, even if they are added after the app has been started.
    • App triggers "start" event after initializers and initializer events
    • ⚡️ Updated to Backbone v0.9.1