Spherical harmonic transform (SHT) previews are display instead of a solid
background color before the base multires tiles are loaded. If a thumbnail is
provided, it will be displayed instead of the SHT preview. If the thumbnail is
provided as a Base64-encoded string, the SHT preview may be briefly displayed,
since image loading is asynchronous, while the SHT preview is loaded
synchronously.

Multiple people have now opened issues in other languages, so I guess I need
to be explicit. I thought it was obvious that English should be used given
that all the documentation is written in English, but apparently it isn't.

try adding circle config (#1)

* adding automated tests to run on Circle with selenium, still need to add screenshots
Signed-off-by: Vanessa Sochat <vsochat@stanford.edu>

Try taking screenshot (#2)

Adding screenshots (working) back in to tests, ready to PR to upstream
Signed-off-by: Vanessa Sochat <vsochat@stanford.edu>

Don't include driver binaries.

Take screenshot of only viewer element.

Don't remove Travis config, at least for now.

Run Black on tests script.

Fix automated tests for Firefox and some formatting changes.

Update test documentation.

Adding some notes about how to generate multires images ^_^ (it took me some time to figure it out hehe). 

Thanks by the way for this lib! I love it :D