Intercooler.ready calls stack handlers but don't allow them to be cleared

In a previous issue, I'd raised the problem of running code after the Intercooler swap had completed. It was pointed out that I could use the Intercooler.ready function in the IC-Script header to kick off my cleanup code when everything had finished.

This is great, but now I've run into a bit of a problem because each call to Intercooler.ready pushes the ready function onto a global stack. In my particular situation, I'm using IC to respond to a user request which may or may not work. If it fails, I set an error response using IC-Script and Intercooler.ready, and if it succeeds, then I set a different response to indicate that it worked.

Now, if the user makes several attempts to use this function, the previous ready handlers are still active on subsequent attempts. So, if a failed attempt was made, then on a subsequent successful attempt, you get back both the failed attempt handler AND the successful attempt handler.

What would make this workable would be if there were a single shot handler capability, like the jQuery one function. I don't need the handler to be permanent, but there's no way to turn it off once installed.