removing static references to document
removed static ref to document
removed static ref to document
added config param for default font and font color
added some config param for hard-coded values
refactoring platform class
specific class now hold ref to platform
refactoring, now event not listened on stage but on a sprite
fix in bounds computation which could return NaN
implemented advanced hit test for object tag hit test bug
added config param for hit testing
implementing layer dedicated to video