• Ignore invalid X-Forwarded-Prefix (GHSA-fr74-9mf9-gf44)
• Login: Allow :/_ in server (bug #1305, regression from 5.5.0)
• Compile: Valid UTF-8 (bug #1113, #1213)
• Compile: Replace LZW with deflate compression
• Add missing translations
• Syntax highlighting: Update MySQL, MariaDB, SQLite, PostgreSQL
• Support disabled set_time_limit() and ini_set() (bug #1288)
• PostgreSQL: Log in with empty server (bug #1304, regression from 5.5.0)