Build 21 release notes

New Features 🙌

• Display level number and name at start of level

Bug Fixes/Improvements 🐛

• Fix some player movement edge cases
• Fix for some Venom levels missing coins
• Improve magnet hazard (minimize jerkiness)
• Add proper newspaper image for Credits level
• Make moving walls more obvious (via background tracks)
• Remove WIP dialogs from Venom levels
• Automatically hide/unhide mouse cursor
• Stop moving wall and laser SFX on victory
• Various visual fixes and improvements