.cljc conversion for ClojureScript use

[cemerick]

Looks like this will be pretty straightforward.

My preference would be to move the rendering bits into a new dorothy.jvm namespace. That's obviously a breaking change, but it would leave room for node- and browser-specific namespaces for rendering in those environments later. If you'd prefer not to do that, let me know and I'll keep the jvm rendering stuff where it is.

[cemerick]

This is effectively done, over on this branch:

https://github.com/cemerick/dorothy/tree/cljc

I'll not open a PR before hearing re: whether the split of rendering stuff into a dedicated namespace is acceptable. Either way, I'll then update the documentation and such before then opening a PR.

[daveray]

Hey Chas. I'm totally open to these changes. I trust your judgement and since I haven't really worked on or used this code in quite a while, I don't really have a strong opinion. Would the upgrade path for existing code just be changing a :require to account for the new namespace?

[cemerick]

Yup, it'd be changing e.g.:

(ns foo
  (:require [dorothy.core :as dot :refer (render)]))

to:

(ns foo
  (:require [dorothy.core :as dot]
            [dorothy.jvm :refer (render)])))

[daveray]

Works for me.

[cemerick]

Opened the PR. Some things you'll need to do I can't:

• change the project description to indicate the lib is usable from ClojureScript
• activate the repo in travis so CI builds will proceed, and update the README badge appropriately
• when you're ready, cut a release to clojars (I've deployed a build from my fork to [org.clojars.cemerick/dorothy "0.0.7-cljs"] if you want to try it out first)

I'm now using the results of this with some nontrivial graphs, and it all looks 👍 FWIW