Update plugin to version 3.1.3 (fixed issue regarding cross-domain if…

…rames)

Updated auto-update and primary scrolling function to address a bug r…

…egarding horizontal scrollbar resizing

Optimized/fixed mouse-wheel scrolling on OSX, added version 3.1.13 mo…

…usewheel plugin, removed year from license

Update touch-scrolling function

fixed merge conflicts

Update plugin to version 3.0.8

Update plugin to version 3.0.7

Update plugin to version 3.0.6

Update plugin to version 3.0.5

Update plugin to version 3.0.4