• engine: Fix Metal bug when setGeometryAt is called multiple times.
• engine: Improvements to DoF.
• engine: Fix RenderTarget NPE when depth is not present.
• engine: Improvements to Camera APIs. Move focus distance from DofOptions to Camera.
• engine: VSM shadows now support shadowMultiplier.
• java: Expose several MaterialInstance APIs (setColorWrite, setDepthWrite, setDepthCulling) that
  should have been public.
• java: fix bug with Texture::setImage buffer size calculation.