0.8.8 is the last version. CL Pics will no longer be maintained as a Firefox extension. Instead, it's been ported to a userscript. Install the Greasemonkey extension for Firefox, or the Tampermonkey extension for Chrome, and install the script from github: https://github.com/eternicode/clpics.
0.8.8 adds an "Export" button to the preferences panel, which you can get to from about:addons. This will display a textarea with your settings listed; copy and paste this list into the "Import settings" section provided by the userscript, and click "save".
Speed up browsing on Craigslist by putting images right in with search results. Also has a text preview option, image resizing, and image zoom-in, all with smooth animation. Includes preferences for everything from image resizing method to zoom-in delay to showing only images hosted on craigslist. Works on both search and category listings.
Please report bugs at the bitbucket issue tracker. Please search for similar issues before posting, and add your observations to existing issues if applicable.
Google group: https://groups.google.com/forum/#!forum/clpics
Source code: http://bitbucket.org/eternicode/clpics/src