app.import() works with node_modules now! As of Ember 2.15. Previously it only worked with bower_components and vendor.
The new targets feature allows the application to do exactly what we want: list the specific browsers that we want to support, and let the tooling figure out the rest.
Ember addon that provides the inert-polyfill to consuming applications
Asset loading support for Ember applications
Upgrading Ember.js & Ember Data
A really comprehensive guide to writing Ember Addons
The meeting of two well-aligned, opinionated frameworks