Up non-MSVC warning levels #127
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Also adds a CMake option, UTPP_AMPLIFY_WARNINGS, that can be turned OFF to disable the new behavior.
This shows up with /W4 on MSVC. Fixes unittest-cpp#107.
UTPP_AMPLIFY_WARNINGS can be turned OFF to disable the new behavior.
string(CONCAT...) was not available in older versions of CMake targeted by this project.
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Depends on #126 .
Implementation of #10 intended for compilers that accept -W style warning arguments (GCC/Clang/similar).
In case this introduces issues for anybody, the new CMake flag UTPP_AMPLIFY_WARNINGS can be set to OFF to turn off this behavior.