[Issue 17878] Add __traits(isFuture, ...)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17878

--- Comment #4 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/dmd pull request #12093 "[dmd-cxx] Backport more recent traits to the C++
port" was merged into dmd-cxx:

- 18da3ec2cbe528f546ab3fc955662457fb0a81e1 by RazvanN7:
  [dmd-cxx] Fix Issue 17878 - Add __traits(isFuture, ...)

https://github.com/dlang/dmd/pull/12093

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