Added support for commonJs (npm/browserify)
Add onSetPosition callback

Consider adding a callback for setPosition.  I've used this to move buttons and dots based on slide contents/heights.
add appendDots option

- same exact option as appendArrows, except for the pagination
  dots. Change where the navigation dots are attached.
  (Selector, htmlString, Array, Element, jQuery object)
Fixing chrome mobile pan bug
Unset width on destroy & unload, instead of removing style attribute
Improve Selector Search for asNavFor and focusOnSelect

Clicking on slides for a slick instance with `asNavFor: true` causes the index lookup to resolve to `undefined` when the `.slick-slide` contains child elements.

This fix continues up through the parents of `event.target` until it finds the DOM node with the `slick-slide` class instead of requiring it be the immediate parent of `event.target`.
Merge pull request #517 from deefour/patch-1

Improve Selector Search for asNavFor and focusOnSelect
Revert "Improve Selector Search for asNavFor and focusOnSelect"
Merge pull request #518 from kenwheeler/revert-517-patch-1

Revert "Improve Selector Search for asNavFor and focusOnSelect"
Merge pull request #512 from jimredd/unset-width

Unset width on destroy & unload, instead of removing style attribute
Merge pull request #498 from codonnell822/append-dots

add appendDots option
Merge pull request #482 from apatterson-ni/commonJsCompatibility

Added support for commonJs (npm/browserify)
Revert "Added support for commonJs (npm/browserify)"
Merge pull request #519 from kenwheeler/revert-482-commonJsCompatibility

Revert "Added support for commonJs (npm/browserify)"
Fixing #474
Fix slickGoTo index equal 0
Merge pull request #520 from hulufei/master

Fix slickGoTo index equal 0
added condition for loading jQuery in Browserify
Forgot to export in CommonJS init
Progressive Lazy Load option fix for 404 requests

Currently if a image 404's or has any other error then the .load callback is never called, which means the recursive function stops right there. This proposed change is to handle any image error and continue loading additional images.