Version 0.2 - 13 April 2008
    + added options parameter
    + new option: delay (integer)        - The delay in milliseconds filter waits after a keystroke to begin processing. (default: 200)
    + new option: keepSelected (boolean) - Wheter or not to retain the selected options between filter requests. (default true)
Version 0.1 - 11 April 2008
    initial release