libscratchcpp 0.9.0

Breaking changes:

• Added fastBoundingRect() method to ISpriteHandler.
• Removed setFunctions() method from Script.
• Replaced callbacks with signals (#475).
• Refactored type casting (#523).
• Moved bounding rectangle methods from Sprite to Target so that they can be used in Stage.
• Added touching (clones, point, color) methods to ISpriteHandler and IStageHandler.

Non-breaking changes:

• Added fastBoundingRect() method to Sprite.
• Fixed sprite fencing (#469).
• Dependencies such as nlohmann_json and zip don't have to be installed on the system anymore (#492).
• Added API for getting the library version (#500).
• Fixed hangs on Windows when audio support is enabled (#506).
• Implemented microphone loudness blocks (#115, #116).
• Added API for edge-activated hats (hats which are processed on every frame and activated when value reported from the block predicate changes from false to true).
• Implemented the "when greater than" event block (#95).
• Added onInit() method to IBlockSection (#409).
• Added blockFunctions() method to IEngine.
• Improved performance when compiling projects by caching the list of block functions (#366).
• Implemented hexadecimal, octal and binary string conversion (#462).
• Added threadAboutToStop signal to IEngine (#410).
• Fixed decimal point number precision (#444).
• Added 330 characters limit to Target::setBubbleText() (#479, by @Jessie-JY2728).
• Added touching (edge, point, sprite, color) methods to Target.
• Implemented the touching object block (#104).
• Implemented the touching color block (#105).
• Fixed crashes caused by undefined variables and lists (#446).
• Fixed Value::toBool() (#517).
• Sounds in clones don't share the volume anymore (#411).

Full Changelog: v0.8.0...v0.9.0