* 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