Prevent zooming on mobile
Make hide and toggle fire on touchstart or click
Change default offcanvas transition time
Position offcanvas content on right side beneath page, instead of left, to fix drag content over nav issue
Change offcanvas to slide on top of content from left, more consistent across browsers
Remove unneeded close element (mask now closes), add destroy method
Merge pull request #42 from jmfee-usgs/LATESTEQ-192

merged.