Add unminified TouchSwipe 1.3.3 for reference.
Upgrade TouchSwipe from 1.3.3 to 1.6.6. Fixes code.org/learn carousel links on Android.
TouchSwipe: make link elements swipeable via defaults.excludedElements.
Merge pull request #208 from code-dot-org/upgrade-touchswipe

Upgrade TouchSwipe from 1.3.3 to 1.6.6.