• Java: add methods for TransformManager.getChildCount(), TransformManager.getChildren() and Scene.hasEntity()
• engine: Fix stencil buffer writes with OpenGL backend.
• gltfio: add new virtual method to MaterialProvider that all plugins must implement.
• gltfio: add an assert for inconsistent sRGB flags among usages of a particular texture.
• engine: improve scissor documentation.
• backend: scissor is no longer clipped to the viewport (done on Filament side).
• samples: add debug overdraw visualization to gltf_viewer.