Add support for rendering images

[junkdog]

So... I had a chance to check out this "web" thing. There are images everywhere... is this something we want to support in all or some of the backends?

[orhun]

Sure, it sounds reasonable to me. Maybe as a separate widget?

I think it would be nice to resolve #73 before adding new widgets though. (I'd appreciate your feedback on #6 and potentially changing how widgets work in #73 (comment))

[junkdog]

i suggest we close this until we have a real-world use case

[orhun]

We might get a duplicate issue that way, I suggest we keep this open with low priority right now