Support html in output

[marcbachmann]

I wanted to write an extension that converts urls into clickable links. But it looks like there's no way to render html.

[marcbachmann]

Related to #101

[marcbachmann]

Maybe it's a bad idea to modify the output. We can also convert the links on hover or CMD+hover.
Like iTerm is doing it.

[arronhunt]

+1

[MrRio]

See this: https://github.com/zeit/hyperlinks

[chabou]

I think we can close it.
@dorian I think it can be possible to do this with some ANSI escape code. Xterm uses this to let scripts change window/term title. A plugin can intercept this sequences and use meta data inside (like URL)