check for NaN in calculateTransformedTime; otherwise, the cubic
interpolater would infinite loop
Add a temporary copy of web-animations-next-lite.dev.html as web-animations.html

Fixes https://github.com/web-animations/web-animations-next/issues/226
Merge pull request #227 from dstockwell/wahtml

Add a temporary copy of web-animations-next-lite.dev.html as web-animations.html
Merge pull request #225 from samthor/check-nan-timing

check for NaN in calculateTransformedTime
clear currentTimePending when setting current time
use element.animate
Moved timing.js into minifill tests