Enable C++17 with MSVC

Authored by dvratil on Dec 4 2018, 1:00 PM.

Description

Enable C++17 with MSVC

Our target on Windows is MSVC 15, which has good support for C++17
so we can use <optional> and <variant> - on other platforms we stick
with C++14 and using experimental/optional etc.

Details

Committed
dvratilDec 4 2018, 1:00 PM
Parents
R165:b25c808942ef: One more try for MSVC
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