Merge remote-tracking branch 'origin/master' into feature/C++11_variadic_templates
# Conflicts:
# include/etl/type_traits.h
# include/etl/type_traits_generator.h
# include/etl/version.h
# support/Release notes.txt
# test/test_string_u16.cpp
# test/test_string_u32.cpp
# test/test_string_wchar_t.cpp
# test/test_type_traits.cpp
# test/vs2017/etl.vcxproj
# test/vs2017/etl.vcxproj.filters