* add browserstack
* check for data before removing root token
* fix root prefix and select by attributes for ie11
* use objectAt for ie11
* use blobs instead of files for ie11
* manually round cirucmference for ie11
* skip csp test on ie11
* skip tests in ie11
* include polyfill for CI
* remove on exit hooks
* update which browserstack tests are run
* remove ie check since we are not running these tests in ie
* remove ie check since we are not running these tests in ie
* add ember-concurrency-test-waiter
* use withTestWaiter modifier in various parts of the application
* more withTestWaiter
* await instead of return for a few helpers
* update ember-cli-flash
* run ember generate ember-cli-flash
* remove withFlash helper
* fix typo and replication tests
