Refactor watch_and_wait into class.
Refactor watch_and_wait into class.

sorgerlab/indra,johnbachman/indra,sorgerlab/belpy,johnbachman/belpy,bgyori/indra,johnbachman/indra,sorgerlab/belpy,sorgerlab/indra,johnbachman/belpy,johnbachman/belpy,bgyori/indra,johnbachman/indra,sorgerlab/indra,bgyori/indra,sorgerlab/belpy