Fixed graphical glitches caused by icons overlapping the edge of the editors on the Gnome desktop.
SceneProcedural now renders general VisibleRenderables too.
Fixed SceneReader to read animation at the correct speed (issue #68).
File->Quit and the window close icon now prompt the user to confirm before closing if there are unsaved changes (issue #19).
Added support for shader parameters of type “shader” in the RenderManShader node - these are mapped to plugs which accept connections to other RenderManShaders, allowing the creation of networks of coshaders.