0.5.0

Changed

• Fix guest autocomplete addition - #151
• Remove modal, guests now only created by email in the share panel - #149
• Update LICENSE to GPL-2.0 - #155

Fixed

• Detect existing email/user on frontend and backend - #168
• Improve detection of email addresses when typed into share field - #170
• Preserve token when reshowing form after error - #158
• Add event driven password generation - #160
• Apply whitelist to frontend and comments URLs - #165
• Fix style issue on set password page - #161