 * Add Fenix Beta, Fenix Nightly and Lockwise
 * Download Fenix Release/Beta/Nightly, Focus and Klar from Mozilla's Taskcluster (continuous integration server)
 * Fix "Light theme is always shown at first run"
 * Thanks Rail Aliiev and Johan Lorenzo from Mozilla for their support <https://bugzilla.mozilla.org/show_bug.cgi?id=1627518>
 * Thanks KarlHeinz and DeenHyper74 for their error reporting and support