* Support recipient aliases for OpenPGP encryption
* The key and signature parts of the message security popup on a
received message could not be selected for copy/paste
* Various UX and theme improvements
MFSA 2021-13
* CVE-2021-23991 (bmo#1673240)
An attacker may use Thunderbird's OpenPGP key refresh mechanism
to poison an existing key
* MOZ-2021-23992 (bmo#1666236)
A crafted OpenPGP key with an invalid user ID could be used to
confuse the user
* CVE-2021-23993 (bmo#1666360)
Inability to send encrypted OpenPGP email after importing a
crafted OpenPGP key
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=584
