* Docs update

Improvements for ivkremer#11, fixes: IE sorting problem, minor refact…

…oring

update

resolving ivkremer#9; invalidAsValue option added

bug fixes

fixes; core improved; optgroup tag support added

checkboxes mode worked very bad in some cases

bug fix

didn't worked when clicking on checkbox directly

package file

features added (see description), fixes; v1.1.3

beforeOpen, afterOpen, beforeClose, afterClose added

improvements