Blessing Skin Server v3.0.2

[New] Migrating textures from v2 to v3 at /setup/migrations
[New] Option of adding query string to avatar
[New] Checking for updates
[New] Placeholders for comment script
[Improved] Enhance performance at installation
[Improved] Use mbstring to split chinese characters
[Fixed] Background size at homepage
[Fixed] Support for chinese player names
[Fixed] Bug of converting object to string
[Fixed] Redirect /api/textures request to real location