behaviors allow for a functional hash lookup
Call `stopListening` when RegionManager remove region
Add tests to bindEntityEvents and unbindEntityEvents
Clean trailing whitespaces and fix new line at eof
Add grunt lintspaces to lint whitespaces and new lines
Add inline docs for module implementation
Extract Underscore collection mixin
Merge pull request #1113 from jasonLaster/util-collection

Extract Underscore collection mixin
update behavior inline documentation
use the built in marionette extend  for behavior
improve inline documentation for behaviors
Add evented support to behaviors
Add test to ensure execution context
extend region.show to use preventDestroy
tidy up region doc headings
fix broken commands/reqres doc links + condense

since these were merged into marionette.application.md in 29faee228e7983d677175d6c15cb76d7116cbc0b, it seemed appropriate to just condense it. also the links are currently broken. can revert back the former if necessary.
Strengthen existing specs by testing the CollectionView's itemEvent arguments