Behave-Graph Suspendable

This is an extension to behaviour graphs to implement a suspendable engine. While behaviour graphs are great, they have issues with serializing them during an existing execution. This implements a suspendable engine, which relies on nodes implementing the suspendable interface. The engine can be suspended mid execution, serialized and then unsuspended.

This is a work in progress as there are a number of edge cases that need to be accounted for, namely serialzing nodes that don't implement the required interface as well as hydration issues.

To use it you can do the following :

import