Discard all ordering constraints, except responsibility

[ELLIOTTCABLE]

As @devyn is exploring for us, truly useful parallelization seems extremely difficult with the current design. On top of that, there's issues like #4, that prove that the implicit ordering-of-serial-operations isn't really all that effective within the framework we've designed.

@devyn's suggestion is that we simply discard those constraints entirely: anything may happen in any order, subject only to the constraints of A) dispatches from a particular routine (i.e. the un-Tires-esque strictly-serial nature of our scripts), and B) the responsibility system's marshalling of separate scripts' executions. (To put it another way, implementation-wise: “get rid of the global operations queue entirely.”)

I'm still not remotely sure of the implications of doing so, though.