v0.8.0

Changes since v0.7.1:

• Add feature to limit number of messages kept via --messages-limit=N (#375, thanks @marcmillien)
• Synchronize removal and clearing of messages over websocket
• Synchronize quit over websocket
• Fix HTML character escaping within plain text messages (#392, thanks @okyada)
• Plain text display now uses pre-wrap (#462, thanks @GDmac)
• Add version to startup message (e84f4b6)
• Remove console.log from date.js (#270, thanks @gnuchu)
• Improve logo, especially on high dpi displays (#458, thanks @tagliala)
• Docker image is now much smaller and based on alpine (#344, thanks @mtsmfm)
• Add version to --help output (dbeecbf)
• Always enforce foreign key constraints in sqlite3 (#451, thanks @phongnt270)
• Fix keyboard navigation when searching (d24a4a6)
• Fix attachment links when using --http-path (#405, thanks @sd65)
• Upgrade jquery to address potential ReDoS (#411, thanks @abdullakarimov)