adding cache_clear method
adding logging and abstracting out test user
allowing additional parameters passed to call_api_with_cache
adding test for use_statuses_api
condense use_statuses_api
functionalize out reading from cache
cruft warning!!!
a graceful TODO in here
clear_cache() now takes list of users
refactoring nad tests for lookup_many
properly give attributes to nodes in mentionball
fix unicode screen_name issue
hack to workaround problem of lists being pulled from lookup cache. unsatisfying