* 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
Noelle Daley