Refactor PlayNodeMessage to PlayNodeStatus
Forgot to add node.py
Add Manifest.in file
Add data files to setup.py
Update Manifest.in
Add ability to remotely call a play script using GrandCentral

Playnode should be confined to two modes, evaluator and monitor. The
script that executes an Evolutionary loop I call that a play script,
and that should be instantiated by GrandCentral in order to simplify
the role of a PlayNode, else it becomes exceedingly complicated.