wchar_t is not char16_t on MSVC, requiring a lot of typecasting when
interfacing ZRCola database strings with GUI.
Signed-off-by: Simon Rozman <simon@rozman.si>
ZRCola is using UTF-16LE strings internally (thanks to Windows).
However, wchar_t and std::wstring are UTF-32 on other platforms.
Signed-off-by: Simon Rozman <simon@rozman.si>