• Rename fromUserId→fromUserIds and toUserId→toUserIds, and accept arrays of User IDs, one for each object in privateKeys and publicKeys, respectively (#815)
• Add CAST5 to always-allowed algorithms, for compatibility with Golang's openpgp library
• Fix support for old browsers:
  • Disable Web Workers on browsers without MessageChannel support
  • Fix stream.slice() in old Firefox
  • Fix armor parsing edge case in some browsers
• Fix getExpirationTime with capabilities and an expired signing subkey
• Prefer a non-revoked primary user (#812)
• In browser debuggers, don't constantly pause when "pause on exceptions" is enabled (#784)
• Add links to Gitter (#818)