Make SMTP relay RFC 3156 compliant.
Make IMAP decryption RFC 3156 compliant.
Add changes file.
Merge remote-tracking branch 'drebs/bug/3775_keymanager-fails-to-check-signature-for-an-email-attachment' into develop
Set dep versions on VERSION_COMPAT.
Merge remote-tracking branch 'drebs/set-version-compat-for-keymanager' into develop
catch unhandled exception and show backtrace
Merge remote-tracking branch 'kali/catch-unhandled-exception-with-bt' into develop
Do not log mail docs content
Merge remote-tracking branch 'chiiph/bug/do_not_log_mail_docs' into develop
Fold in changes and update dependencies
Merge branch 'release-0.3.5'
Merge tag '0.3.5' into debian

Tag leap.mail version 0.3.5
add freeze_debianver_command
freeze version to 0.3.5