Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Version 2.0.1Released Jan 7, 2018 - 9.68 KBWorks with firefox 42.0 and later, android 48.0 and laterUpdated to the new WebExtension format to support Firefox Quantum.
New code now on Github: https://github.com/tomroyal/kitten-block-firefox
Source code released under Mozilla Public License Version 1.1