Mostly, removing things that were never intended to be exported publicy.
BREAKING CHANGE:
The following are no longer publicly exported APIs. They were intended as internal
utilities and you should use your own util:
```
browserDetection,
dispatchEvent,
el,
normalizeCSS,
stringifyElement,
expect (and custom matchers for Jasmine)
```
The web animations API now requires that all styles are converted to
camel case. Chrome has already made this breaking change and hyphenated
styles are not functional anymore.
Closes#9111Closes#9112