chore(package): remove version from bower.json, just use tags

Granular phantom moving, fix #81

Compile 1.8.1

Wrap labels in another element for easier stylng

* Minimum size is only enforced when manually resizing, not setting v…

…alue

* Range-swapping behaviour is configurable

CSS fixes and improvements, cheifly for Internet Explorer

Prevent multiple events from being fired when dragging a handle back …

…past the range

version 1.7.4

Fix IE bug