Implement HTML canvas renderer

[jrmuizel]

It would be great to have an HTML5 canvas renderer for this format.

[subtleGradient]

There's an old branch somewhere with a JS implemention using React ART. But then we added a bunch more features to the native implementions and haven't gotten to bringing them to JS yet. If anyone is interested in finishing it, I can publish it to a branch

[jrmuizel]

I'd be interested in taking a look

[labenz]

Also interested in the HTML5 canvas renderer

[ptomasroos]

@subtleGradient do you mind pushing this to a branch? I'm willing to take a look at this in the coming weeks

[subtleGradient]

@lozzle any chance you could resurrect my old HTML5 branch and publish it somewhere?

[subtleGradient]

Found it #152