v3.4.0 with a brand-new 3D skin preview!

中文版更新日志看这里：CHANGELOG

• [New] 3D skin preview now supports double-layer skin and alex model (thx to skinview3d)!
• [New] Support SQLite databases (theoretically support PostgreSQL too)
• [New] Button to clear selected textures in closet
• [New] Support PHP 7.2 (with patch installed)
• [Improved] Adjust allowed maximum password length to 32
• [Improved] Add plugin configs to sidebar menu and flatten multi-level menu
• [Improved] Do some checks before updating player profile
• [Improved] Update score after removing textures
• [Improved] Optimize SQL queries on view admin.index
• [Improved] Adjust the style of overview chart on admin.index
• [Improved] Check existing tables before running database migrations
• [Improved] Check for escapeshellarg function before installation
• [Improved] Return 403 instead when accessing private textures #111
• [Fixed] 2D skin preview for alex model
• [Fixed] Broken i18n detection on Edge & IE
• [Fixed] Using JavaScript protocol in a.href doesn't work in Firefox #105
• [Fixed] Set UTF-8 encoding for error messages