[Plugin: W3 Total Cache] only append query string to specific js & css

The js and css that come along with my installed plugins only change when the plugins get updated, which isn’t that often, but I’m pretty regularly updating my theme’s main js and css file. I’d like to only append a query string to those files as well as have a way to manually trigger the query string update on those files after I update those files via ftp.

http://wordpress.org/extend/plugins/w3-total-cache/