Simulate interaction states
Would it be possible to simulate :hover/:active/:focus states when rendering? It seems like many sketch symbol libraries include some combination of these states for interactive components like buttons and inputs (e.g. a default button, a hovered button, and an active button). Right now to do this with html-sketchapp you have to build a way to manually force these states into your component code (e.g. a special `.focused` class). It would be nice if there was an API that could direct html-sketchapp to simulate these states instead. I'm thinking something like a "data-sketch-simulate-hover" attribute that you add to the "data-sketch-symbol" wrapper.