core>varying/new: add ignoreNull and delay varying modifiers.
return true on attrModified when model is newly set as attribute
collection/new: add watchLength to collections.
collection/new: take() and TakenList for collections.
varying/new: throttle() for Varying.lie.
view>container/bug: allow rendering of null as a view subject.
all/new: add livescript inheritance support.
view/new: really basic ViewModel hook; may actually be completely sufficient.
collection/noop: fix a comment.
collection>filtered/refactor: complete rewrite to fix remove().
collection/bug: fix removal eventing.
collection>uniq/feature: add a by() func for uniqueness check.
collection/feature: add reduction methods. DANGEROUS, poor perf.
collection>flattened/new: add flattened list!
collection/new: update collection base class with chain methods.
[!]model>binder/bug: “fix” model binding to auto-flatten Varyings.
model/bug: fix a case where unset would not event the change.
model>delete/noop: simplify deleteAttr internals to allow func sets.
model/feature: allow model.set(‘key’, obj).
varying/new: add a bunch more varying modifiers.

* TODO: probably push these into an Rx interop interface?