Add zoomMax option

Downgrade hammer.js to 2.0.1 to fix pan event issues with Firefox

Remove toe.js

Update to imgViewer 0.8.0

Add example showing how to save a zoomed view

Bump release to 0.7.3

minor edits

fix bug in drag implementation on mobile devices

support touch events and refine mouse event handling

support requestAnimationFrame for rendering during image manipulation
use css transformations to manipulate image

Release 0.6.0