http://manual.gromacs.org/documentation/5.1-current/dev-manual/naming.html
Add trailing underscore to member variables
Cached script on WorkerGroup
https://medium.com/hackernoon/how-to-compile-node-js-code-using-bytenode-11dcba856fa9
WorkerGroup activate & deactivate methods to manage OS resources (threads) when WorkerGroup is not referenced by a route