Rated 5 out of 5 stars

per lethe el gen. 30, 2015 ·

Looks like this is abandonware.

Edit: Thanks for the update.

per Firefox user beeb85 (desenvolupador) a feb. 3, 2015 ·

Hi, this isn't abandonware, it just hasn't needed to be updated for any changes. It runs nicely as it is.

Unfortunately, it looks like there was a bug or issue somewhere, that caused the maximum compatible version to not be automatically updated on addons.mozilla.org, I've now manually.