remove updateKill failure. _tree.batch replaced it
old chinchilla stuff. going away.
implement data model using `_tree` subclass mechanisms

Performance now roughly matches Om. requestAnimationFrame not even
used. Pretty exciting stuff.

_tree might need a bower.json to declare its underscore dependency.
rename folder to move away from chinchilla
implement localStorage; use more model methods; change name to title

localStorage was pretty simple to implement. mostly in
js/data/main.js, but partiall in js/require-main.js (could easily be
consolidated).

There may still be some cruft hanging around from before _tree
modeling, but I cought a bunch of easy instances with some greps.