• Improved overlay handling so it plays better with other libraries (#2582 @BeebBenjamin)
• WebGLDrawer now supports the imageSmoothingEnabled option (#2615 @pearcetm)
• Fixed: If you switched from WebGL drawer to canvas drawer, it didn't clean up properly (#2570 @pearcetm)
• Fixed: TiledImage.setClip would sometimes leave tiles unloaded (#2590 @pearcetm)
• Fixed: The WebGL drawer didn't support viewportMargins (#2600, #2606 @pearcetm)
• Fixed: If you set viewport rotation before flip, the navigator display region would be drawn wrong (#2619 @jbakarich)
• Fixed: In some cases, the WebGL drawer would draw the image in white (#2620 @sbarex)
• Fixed: If the user changed the page zoom or moved the window a different monitor, the image would disappear (#2627 @pearcetm)