v15.3.0

Added

• Renderer: new scaleTarget that allows to specify which HTML element to be used as reference when scaling the canvas (thanks @johnhyde)

Changed

• Application: world steps and rendering update are now done through a new global TICK event
• Application: further "decoupling" of Application, Stage and State (see #1091)
• Renderable : faster implementation of the tint getter/setter, and Color copy method

Fixed

• doc: fix the @name value of state.DEFAULT (thanks @johnhyde)
• doc: fix documentation for the TMXUtils namespace
• Renderer: fix potential memory leak in WebGL, where the renderer was not clearing the save/restore stack upon reset
• TypeScript : fix optional arguments typings for all renderers and Application constructor