sets APP_CLASS constant for datastores to re-use inherited ability in the test datastore, excludes stored keys prefixed with underscores from all_apps in preparation for using underscore-prefixed keys to store internal settings and flags
adds some internal flag keys to spec mocks
supports underscore-prefixed flag keys in the test datastore
uses a _pool_updated flag to determine whether to refresh the local cache of applications from the pool
bump to 0.1.1
updates helper classes to reference the Excursion::Pool local cache instead of storing a copy of the application
cleans up ApplicationHelper#method_missing a bit and adds output to rake tasks