goToHistoryState doesn't work correctly

[Katahdin]

If you use goToHistoryState to switch between child states, of a concurrent state; Stativus will never executes the exitState functions. Instead Stativus jumps to the parent concurrent state and works it way down to the target state.

[etgryphon]

Do you have an example that I could test against?

[Katahdin]

I just sent a pull request that adds goToHistoryState tests that illustrate the problem.