Assegnate 5 su 5 stelle

Hi, all. You can use it after ThunderBird 8.*.
set extensions.checkCompatibility.8.0 as false,
for other versions of ThunderBird, set these keys as false.

extensions.checkCompatibility.5.0
extensions.checkCompatibility.6.0
extensions.checkCompatibility.7.0
extensions.checkCompatibility.8.0
extensions.checkCompatibility.9.0

But I hope to see a Real Update...