* The current evaluation of uppy promises is causing the entire suite to fail
if there's an exception. Instead of using `done` we use the simpler
pattern of returning the promise from the test to force Qunit to wait
until it's completed.
* In some browser conditions `/last.json` will be requested depending on the
particular scroll / performance. This causes the tests not to fail if
that is the case.
* Keyboard shortcuts were not being fully cleared between runs,
resulting in tests failures.
Robin Ward
e1fb020a63