Abandoned? Rated 5 out of 5 stars

Did the developer abandon this add-on? Is there an alternative?

Edit: I've had some luck with downgrading to the older version then upgrading back to the latest, if anyone would like to try that to get it working again.

Great RSS reader, any Firefox 29 update coming soon? Rated 5 out of 5 stars

I've been using this add-on for years, please update to work with Firefox 29.