Added xmarks Category thumbs; added someimage.com thumbs (sometimes)
Key 'b' opens image in a background tab
Version 2.6beta1; compat with ff 27.0a1.
Version 2.6
Added .gitignore
Now uses default image quality instead of requesting optimizeQuality

Firefox reportedly gives better quality using 'auto' (its default)
than with optimizeQuality.  I don't see any difference on OS X but
perhaps this will help on Windows.  At issue is mainly interpolation
when down-rezing an image.

Suggested by 'tophf' on TZP's wordpress site.
Fixed 500px.com per site changes
Moved default location of TZP toolbar button from add-on toolbar to "toolbar" (navigation toolbar).

The add-on toolbar is scheduled to be removed from Firefox in a few versions.
And the change is necessary for it to work in Seamonkey.

Tool will appear as the last tool in the navigation toolbar.
Added ability to work in the Seamonkey application (which includes a mozilla browser).
Fixed javascript warning: yield => yield undefined
Version 2.7beta1; compatible with ff 28.0a1
Prevent pop-ups on google maps w/ satellite w/o labels
Added Google Plus Photos (except some with 'more' label)
Fixed facebook pictures on wall as grid of square thumbs
Renamed Save Enlarged Image As to Save Full-size Image As
Version 2.7beta2
Merge branch 'master' into site-disable-pref
Marked compatible with 29.0a1; version 2.7beta2 take 2
Merge branch 'master' into site-disable-pref
Fixed vertical alignment of Help link in prefs