Unified the layout of devise forms
Fixed TZ issue in EventDrop spec and removed the last deprecation warning

Added bundler caching on travis ci
Add ChangeDetectorAgent, test

New agent will watch the property of an inbound event stream. When that
property changes, it will emit the inbound event.
Merge pull request #436 from dsander/rspec-fixes

Fixed TZ issue in EventDrop spec and removed the last deprecation warning
Merge pull request #425 from dsander/reset-forms

Unified the layout of devise forms
Updates based on feedback

* Updates the default option for `property` fro 'output' to '{{output}}'
* Use Delorean for tests
Merge pull request #437 from PetroFeed/add_change_detector_agent

Add ChangeDetectorAgent, test