templater/refactor: move around render params to be more consistent.

* remove explicit context call to be more isomorphic
  with Library#get().
* passthrough viewLibrary automatically on RenderMutator.
* correctly handle constructorOpts vs Library#get() opts.
templater/new: add Binder#andAux() to mirror Binder#and().
templater/bug: correctly handle multi-root-node templates.
util/bug: correctly implement util#traverse().

* was inflooping and NPEing.
* i'll write tests soon, i swear.
view/new: add DomView component to square away boilerplate.

* useful for when you know a View is going to handle
  DOM elements as its artifact.
* makes implementation usually as simple as:

class MyDomView extends DomView
  templateClass: MyDomTemplate