removed *item_view.js and *item.hbs for node, kvp, list; cleaned up hn.css
add forceList, forceHash to dC; add convertToList, convertToHash to hn; add bindings to content field
cleaning up: clarified assert messages in hn (for getNode, replaceAt); add dependency on nodeKey and nodeType for hn.json and hn.nodeValChanged; adding styling to idx fields ( lightened)
move jquery selectors from dC into hnv (add , , ,  to hnv); refactor dC to use hnv selectors. refactor contentfield commit binding (shift+return => commit)
restructure hn.hbs to fix be less reliant on content.isHash
add various versions of replaceAt, insertAt, deleteAt, deleteChild to hn'
add support for bubbleup. add dC.bubbleup; add binding to content field, conver dC.activeHumonNodeView back to a binding (just remember to call Ember.run.sync)
add animInsert and animDestroy (rudimentary) to hnv
add bubbleDown
merging css changes