* OpenPGP: Improved support for encrypting with subkeys
* OpenPGP: Encrypted messages with international characters were
sometimes displayed incorrectly
* Single-click deletion of recipient pills with middle mouse
button restored
* Searching an address book list did not display results
* Dark mode, high contrast, and Windows theming fixes
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=552
