v23.06

• #168: /multiplayer: show what others are typing live
• #172: automatically send verification email
• #173: Covert 'dots' to '●' (take 2) by @Captain-Quack
• /db: add search with exact phrase (e.g. "tax" will not match questions that have the word "taxonomy")
• Add click to collapse back to database page
• Include point value and difficulty labels on bonuses
• Fix bug with multiplayer chat preview
• guard against cross-site scripting in frontend -- use textContent instead of innerHTML where possible
• Better-looking multiplayer chat messages
• Escape usernames and room names on join
• Add rate limit to websocket messages
• Increase cookie limit and login time to 7 days

Full Changelog: 23.05...23.06