2.1 - Harder, better, faster, stronger

• Faster fetch mail on launch for not selected accounts, inbox first.
• Build and packaging updated and versioned
• AppImage builds without FUSE
• Security:
  • A crash/overflow fix in attachment storage.
  • DKIM now says "partial" when a signature only covers part of the message, instead of "pass".
  • JMAP no longer sends your credentials to an unrelated domain if the server redirects it there.
• Bug fixes