v0.10.0

BREAKING CHANGES:

chai is now provided by the ember-cli-chai addon. If you want to use it with ember-mocha then load Chai itself and use the chai global directly.

Merged pull requests:

• Update "ember-test-helpers" to v0.6.0-beta.1 #114 (Turbo87)
• Remove "chai" vendor shim #109 (Turbo87)