Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
* Changed development environment from jpm to web-ext (version: 1.6.0)
* The button changes to an inactive state if no feed is available
* improved feed detection
* localized add-on description (de)
* bumped minimum version of Firefox from 24 to 45, removed code to support older versions than Firefox 29
* changed development environment from CFX to JPM (1.14)
* internal code optimizations