Jason Rhinelander 0365d491b5 Remove feature macro for <experimental/optional> ... libc++ 3.8 (and possibly others--including the derived version on OS X), doesn't define the macro, but does support std::experimental::optional. This removes the extra macro check and just assumes the header existing is enough, which is what we do for <optional> and <variant>.		2017-06-08 18:34:48 -03:00
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pybind11	Remove feature macro for <experimental/optional>	2017-06-08 18:34:48 -03:00