Merge branch 'feature/issue-71-use-api-to-populate-widget-models' into feature/issue-87-add-a-subviewset
Add an each() to ViewSet that iterates over the (view, key) pairs
Add SubviewSet
Remove unnecessary `options = options || {}` line for SubviewSet
Merge branch 'develop' into feature/issue-87-add-a-subviewset
Default `that` to `this` in ViewSet.each()
Merge branch 'feature/issue-87-add-a-subviewset' into develop