Open Surge 0.6.0

• Renamed the game to Surge the Rabbit
• Improved the pixel art style of the game
• Created a new Waterworks Zone
• New gimmicks: Conveyor Belts, Walk on Water, Power Pluggy
• New title screen and new title card animation
• New translations: Italian, Esperanto
• Introduced language extensions (languages/extends/ folder)
• Improved macOS compatibility
• Introduced support for transitions between animations
• Introduced the concepts of action spot and sprite anchor
• Improvements to the SurgeScript API
• Improved several core scripts
• Added support for compound ${EXPRESSIONS} when evaluating text
• Changed the physics
• Added support for D-pad input on Xbox controllers
• Removed legacy Allegro 4 code
• Bugfixes and general improvements