add some more tests
update data uri used to detect webp to be one of newest webp format, also crank the "persist support" localStorage key
Add exclusion of Android 4 native browser, but not Chrome, using negative lookahead in regex
note origin of our 1x1 webp graphic
Adding build file
Rebuilding
Merge pull request #168 from mobify/v2.0-webp-moar-ua-tests

Better webp detection