[tor-talk] verify Thunderbird download .asc file?

[Joe Btfsplk]

Does Mozilla not provide signature .asc files for any of the Thunderbird 
downloads - full installer or partial.mar downloads?
They used to provide them on their ftp download site, but I think 
stopped around Tbird v20-something?

Why are they concerned enough to sign & provide signature files even for 
Firefox nightlies, but not Tbird?

All they list on Tbird downloads is their "KEY" public key file.

Does anyone know a way to actually verify Thunderbird downloads with gpg 
(not hash sums)?