Protect the access to `window`

Includes: #31

Adding _super call to include

3.3.1

[CHORE] Version bump to 3.3.1

Updating dependencies to move off of vulnerable parsejson dep

3.3.0

[CHORE] Version bump to 3.3.0

Bumping deps and files from ember 3.0 init

3.2.0

Version bump to 3.2.0

Fix hoisting issue in Firefox & use native WeakMap when possible

• Fix hoisting issue in Firefox 45 #19
• Use native WeakMap when possible #22

If target.browsers is not found then include the polyfill

If targets.browsers is not found included the polyfill #18

Fix debug dependency

Adding missing debug dependency PR 16

Ember.WeakMap Polyfill

This version supports polyfilling Ember.WeakMap instead of directly importing the WeakMap polyfill. Also the included polyfill will only be added if a browser that is included via config/targets.js does not support WeakMap.