Upgrading to Version 4

With version 4.0.0, Ember is now an V2 Embroider Addon.

There is one main breaking change with this version: you will need to register/configure the Babel transform that Ember Concurrency uses to transform tasks in the "async-arrow" notation (e.g. fooTask = task(async () => { /*...*/ }) into generator functions. This will need to be done in any consuming app or addon that uses the async-arrow task syntax: