After over 2-years of essentially being on the back burner and with virtually no one in charge of the project, momentum has shifted for Thunderbird. Recently Mozilla held a summit in Toronto for the Thunderbird Contributors. From the Mozilla Thunderbird Blog: At the Summit, we made a number of key decisions: A group of seven individuals were elected to comprise a Thunderbird Council with the authority to make decisions affecting Thunderbird. I (Kent James) am currently the Chair of this council. For our next major release, Thunderbird 38 due in May 2015, we set this roadmap: Folders: allow >4GByte mbox folders,…