Sunny Side Up

• Updated dependencies with Ember 3.2
• Drops Node 4 support

Spicy soup

🎉 New major version! 🎉

• Removed install method that copied all the macros into Ember.computed.
• Use ember-macro-helpers to dry up the code a lot and make all macros composable.
• Remove Ember 1.X from the test matrix.

Props for @kellyselden for all this work.