Doesn't Clear "Recently Closed Tabs" Rated 4 out of 5 stars
Very effective and useful extension. I especially like the new configurable interface, I would've asked for it otherwise :-)
There are two little changes I would make:
1. (Easy change) In the options panel, change "Hide from Tools Menu" to "Show in Tools Menu", enabled by default. It's a purely psychological thing, but it means no particular interface is canonical, and also looks like the user didn't choose to hide it away, merely to not show anything.
2. (Harder change) Stealther doesn't stop recording into History > Recently Closed Tabs. This still records a certain amount of history.
Anyway, well done on an extension which largely "just works".