enforce C++14 in cmake + added rxcpp::is_same_v C++14 compatible definition ...#581

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RalphSteinhagen wants to merge 2 commits intoReactiveX:mainfrom

RalphSteinhagen:cmake_cxx14_fixes

Commits on Mar 14, 2022

make cmake enforce C++14 standard
RalphSteinhagen
committed
added rxcpp::is_same_v C++14 compatible definition in view of C++17's `std::is_same_v`
RalphSteinhagen
committed