Ability to count running actions

[rowan-mcalpin]

I would love to have a way to know how many run() calls are happening per second across all of my ParallelActions & SequentialActions. There isn't a way to do that from the user's end because ParallelActions and SequentialActions silently stack the actions inside of themselves.

Basically, I want to be able to do something along the lines of Actions.getActionsPerSecond() and see how many actions are happening per second.