Default to UTF-8 when there is not charset parsed from the mail contents
Merge remote-tracking branch 'chiiph/bug/default_to_utf8' into develop
Move charset parser to a utils module.
Add encoding exception catch to avoid crashes.
Use correct encoding and data type in mails.
Remove commented imports.
pep8 fix: line too long.
Add changelog file for #4000.
Merge remote-tracking branch 'ivan/bug/4000_support-non-ascii' into develop
Fix tests according to rfc 3156.

Also fix test suite loading.
Implement TLS wrapper mode.
Merge remote-tracking branch 'drebs/feature/3637_use-tls-wrapper-mode' into develop
add freeze_debianver_command
Merge remote-tracking branch 'kali/add-freeze-debianver' into develop
Return port and factory from the imap launch method
Merge remote-tracking branch 'chiiph/bug/imap_return_factory_and_port' into develop
Refactor out get_email_charset to leap.common
Merge remote-tracking branch 'chiiph/bug/refactor_mail_charset' into develop
Add version compat line
Merge remote-tracking branch 'chiiph/bug/refactor_version_compat' into develop