1.7.5 - 3/10/10
Total rewrite - more efficient, and easier to maintain. (not that it was hard in the first place, but y'know ;P)
Removed Hanyuu option, its no longer necissary...
Moved extension to the mozilla hosting service.

1.7.0 - 10/3/09
Added SauceNAO DB selection
Changed default IQDB site from iqdb.yi.org to iqdb.org


1.6.0 - 1/27/09
Added Auto Update functionality
Added alternative IQDB site (iqdb.hanyuu.net)


1.5.0 - 1/25/09
Renamed to "Image Search Options"
Misc 'Bug' fixes


Previous Versions - ?/?/?
Unknown, changes not tracked... >_>;