show processing icon after 500ms delay
Filter: update check for "filter-parsed" class

"parsed" would not be returned by getData if the header contains other "filter-" class names
Check for $.fn.closest & use it. Fixes #597
Filter: add "filter-select-nosort" & filter selects now uses textSorter option
Filter: select options are now parsed before being sorted
Widget doc updates
Fix headers option indexing of multi-row headers
update textSorter demo

Icelandic sort is working again
Get rid of widget init delay

filter widget was not seeing the table-initialized event
Filter: make sure textSorter is getting strings
Select2 filterFormatter now allows initial settings. Fixes #598
stickyHeaders: add support for filter_hideFilters

See http://stackoverflow.com/q/23342215/145346
Filter: remove old cached indexing, it was returning incorrect rows. Fixes #600
version bump