v15.5.0

Changed

• Color: optimize conversion function such as toHex and toUint32
• Geometry: optimize circle/ellispe creation and recycling
• Renderable: revert previous changes on the flip[X/Y] optimization since it's causing backward compatibility issue

Fixed

• Doc: fix multiple incorrect @type tags across the API
• Doc: fix ImageLayer extending Sprite and not Renderable
• Doc: fix missing fillStyle and StrokeStyle properties for Text elements
• Physic: fix a potential memory leak when recalculating a polygon edges and normals
• TypeScript: fix missing typings for Vector[2d/3d] x, y and z properties
• TypeScript: fix typings for Array parameter type