Simplify .data() code
Allow multi-element collections to be duplicated in duplicate()
Add data() to retrieve whole data object
Change events namespace back to __events__
Allow pluck(null, 'data') to return array of data objects
Support data copying in clone(true). Closes #42. Closes #43
Fix toPablo() so that it doesn't create elements when a selector is passed - regression from c5d61afd3f79faf4144fb3b8c233b15bc06fbbdc
Fix matchSelectors to determine 'ancestor' for each element in the collection
Tweak comments
Rename 'relations()' to 'traverse()' and change argument order
Abstracted append-related methods; clone nodes if multiple to be inserted. Closes #39, closes #40