• Fix viewport width calculation in IE 9 and 10
• Fix zIndex issues (no forced zIndex anymore, resolves #3 and #6)
• Disable support for table cell stickies :–(

Spec says table cells are not eligible for position: sticky. Safari supports table cell sticky positioning, but Firefox followed the spec and rolled out the support for sticky positioning recently. We now have a nasty situation where we just can't properly polyfill table cell sticky positioning without sniffing due to difference in realisations.

I decided to remove the support for table cell stickies to make the polyfill more consistent across the board. Sorry, lads, no sticky table headers for you.