Add accumulating variant of Stream.debounce

[m50d]

I don't know if there's enough demand/need for this, but I had a use case where I needed something like debounce but that keeps all the elements of the stream, and it seemed generic enough to be worth sharing.

[m50d]

Appreciate there were a number of failures that were my fault, but I can't understand the latest one (native linking failure) - what's the issue here?

[armanbilge]

Just a flake :)

[mpilquist]

Any thoughts on NonEmptyChain versus Chunk here?

[m50d]

It wasn't a particularly thought-through choice, just the type I reached for. For my specific use case a type that expresses that it's always non-empty is helpful, but happy to switch it to Chunk if you think that's more useful in the general case.

[mpilquist]

OK cool, I think we should switch to Chunk then. There are lots of APIs that would benefit from a NonEmptyChunk indication, though we tried that for a while and it didn't end up working out that well.