Merge pull request ww898#2 from k15tfu/fix-build-aarch64 Use cntvct_el0 to get time in utf_converters/performance test case on ARM64
Total redesign. Support VS2019.
basic_string<Ch> optimization was implemented.
Add utf_selector and is_utf_same.
Add MacOs support
Add wchar_t in tests. Improve performance test
Update example code style
Fix table