The add-on is primary provided through Google Play app market and we suggest to use only this way. Links to download add-on are bellow:

QR code to Google Play

For beta testers, we provide actual beta builds which are published via Google Play beta channel. To get beta builds, you only have to click on Become a beta tester link and follow instructions on that page. Then the beta builds will be automatically installed and updated when a new beta version is released. Always you can leave beta builds with clicking on Become a beta tester link again and following instructions on that page.

For advanced users, we also provide direct links to APK files:

Automatic add-on update do the Google Play app itself, so user has to take care himself. We do not provide support for older versions.

Complete add-on change log you can see under this link.