Make resizeImages usable without using Capturing
Fixing tests
Commit half way through to start working on something else. Things are likely broken as of this commit.
Resize the Picture element as well!
Merge branch 'v2.0-image-api-improvements' into v2.0-picturefill

Conflicts:
	build/mobify-2.0.0alpha3.js
	build/mobify-2.0.0alpha3.min.js
	src/resizeImages.js
Merge remote-tracking branch 'origin/v2.0' into v2.0-picturefill

Conflicts:
	build/mobify-2.0.0alpha3.js
	build/mobify-2.0.0alpha3.min.js
	src/resizeImages.js
	tests/resizeImages.html
Bumping version. Reverting build files
Restoring build file for realz
Adding a test case for resizing picture elements
Adding picturefill to repo
Some cleanup, better comments.
Moar cleanup
Cleaning up tests
Take into account browsers that fail at creating a `source` element
Updating docs with information about WEBP and Picture polyfill
alpha3 -> alpha4
Further improvements
More changes
Escaping img elements under picture elements in a way that makes more sense.
Committing alpha4 minified build file to get Jazzcat tests to pass