Update docs/StateManager, improve grammar
Use factory superclass in Route#model hook
Don't fire change events while traversing the
chain node graph, instead gather the events and
fire them after the traversal to avoid side effects
of the change events from modifying the chain graph.

fix #2031
fix #3197
Merge pull request #3233 from teddyzeenny/model-lookup

Use factory superclass in Route#model hook

This is a temporary fix and needs a more robust solution.
Small doc fixes
Update api docs for {{textarea}}

- make them similar to {{input}}
- provide extended example to show how easy implementing a one way and
two way binding on a textarea can be
Merge pull request #3228 from chantastic/master

Update docs/StateManager, improve grammar
Version bump - 1.0.0-rc.8
Update Gemfile
Update to newer ember-dev to fix publishing
Run dist before publishing builds