Ability to add comments to nodes

Adding custom tags

Allow relative paths for editor assets

Plugging a cubemap into the Emissive node makes "Outline Width" functionality not work and the shader turns pink.

Option for toon outline (line width and colour?)

Manually created shaders causes the Inspector extension to throw a warning

Switching between shaders can delete all connections / wreck preview window

Select button not working on cubemaps (0.08)