G.A. vd. Hoorn

@henrik7264: could you please rebase this to we can run CI on it? nevermind, just noticed that `observe_on_blocks_operators` is actually a branch in this repository, so I've rebased it.

Unassigned myself as I believe @wasowski would be in a better position to review this one.

@wasowski: would you have time to take a quick look at this before ROSCon?

Thanks for the review @wasowski.

I'd like to release an updated version of `rxros` soon. @henrik7264: would you have time to take a look at @wasowski's comments?

So, what's the way forward?

> such as topic termination just curious: @henrik7264: how would you detect 'topic termination'? Do you mean the case where a single publisher is publishing to a topic and it...

Would it be an idea to leave spinning to the user? That is how `roscpp` also works, and unless `rxros` needs to do something special while spinning, might be a...

Another friendly ping again. @apartridge: what would be the way forward? Is there anything needed to get this merged?

> If you have any feedback to #133 we would very much like to hear it. well this isn't necessarily very nice: > Remove Zivid One+ support. :)