Output properly generated for ListVerb
Verified with mocked specs (no durable storage used)
Output properly generated for NonsenseVerb
Verified with mocked specs (no durable storage used)
Output properly generated for RenameVerb
Verified with mocked specs (no durable storage used)
Output properly generated for TodayVerb
Verified with mocked specs (no durable storage used)
Output properly generated for YesterdayVerb
Verified with mocked specs (no durable storage used)
Ditto for CreateVerb
Occurrence#date now uses Pacific Time to
calculate which day it currently is.

Added time-warp gem for testing dates