Cancellable promises.

[jmalloc]

Hey guys, I noticed that there's an implementation of cancellable promises in a branch. Is that something that is desired in v2? Are there any hurdles that need to be overcome?

[jsor]

IIRC i was unsure how to propagate through the promise chain plus i wanted to wait until there is a spec finalized: https://github.com/promises-aplus/cancellation-spec/issues

[jmalloc]

I read the whole of "Draft C" without even realising it was a draft >_<
Makes sense, thanks :)

[clue]

Just for the reference: This feature has been implemented with #20 which landed in the recent v2.1.0 release.