Renamed process related StrategyWrapped classes.
Change some of the scopes around GraphStrategy classes.
Add javadoc to StrategyContext.
Only allow construction of StrategyContext using an instance or in package #262
Add method to get list of GraphStrategies on SequenceStrategy.
Removing SafeStrategy - can't fully enforce this #262
Remove unecessary bits from GraphContext. #262
Remove unecessary member variable from StrategyContext #262

No need to maintain a reference to the base graph because it is easily attaintable from StrategyGraph.
Remove reference to SafeStrategy from docs. #262