Optional lazy input evaluation for MealyMachine.reaction()
Optional lazy input evaluation for MealyMachine.reaction()

...and a wrapper that fixes lazy=True named reactionpart(), which is
the name suggested by the original proposer, Kaushik Kannan. Cf. issue #129
and pull request #130.

necozay/tulip-control,necozay/tulip-control,tulip-control/tulip-control,tulip-control/tulip-control,necozay/tulip-control,necozay/tulip-control,necozay/tulip-control,tulip-control/tulip-control,tulip-control/tulip-control