- update to Thunderbird 45.4.0 (boo#999701)
* Display name was truncated if no separating space before email
address.
* Recipient addresses were shown in wrong color in some circumstances.
* Additional spaces were inserted when drafts were edited.
* Mail saved as template copied In-Reply-To and References from
original email.
* Threading broken when editing message draft, due to loss of Message-ID
* "Apply columns to..." did not honor special folders