Add broadcasts for sequences

[joeyballentine]

Wanted to make this a draft to get some early feedback. There's a few things that still have to be done, mainly fixing the issue where it shows the previous broadcast value, which I have been unable to find even a shred of a lead at what's causing it.

Note: I decided to store the lengths in the outputNarrowing map under the "length" key. This is obviously not an ideal solution, but the alternative was duplicating all the same kind of code for storing it in a new map, and i felt it was similar enough to just throw it in there, at least for a proof of concept first.

TODO:

• Expand autorun capability to all the generators
• Remove generators from the cache after sending the broadcast (to avoid them resuming from the previous index)
• Fix the stale broadcast issue
• Probably more

[joeyballentine]

Whats the status on this? Is there anything that needs to be actively addressed? If something is wrong, please tell me what i should change

[RunDevelopment]

Same as before, no?

• Caching is either bugged or otherwise broken for iterators.
• You don't know what the underlying issue is and just nuked the cache.

So please fix the underlying issue, because if we are running one iteration, that'll be a huge problem because it'll run nodes with side effects.

[joeyballentine]

because if we are running one iteration, that'll be a huge problem because it'll run nodes with side effects.

That's not at all what's happening. The problem I mentioned is if you run the chain, stop it, then start again. It is not running an iteration when it auto runs. It's just running the node function, which returns the generator object. it seemed that keeping the same object in the cache treats it the same way as pausing, which is why I needed to dump the cache.

I'm not sure how you got that we're running an iteration from anything I said

[RunDevelopment]

Oh. Well, this PR is about broadcasts, so I assumed that change had something to do with it... I assumed that you discovered this bug because of broadcasts (/run/individual) and then talked about stopping since it happens there too. But I guess it has nothing to do with broadcasts, and is only a fix for stopping iterators? Is that it?

[joeyballentine]

Correct

[RunDevelopment]

Alright, then it should be good.