Force nonstd sting_view and span to fix C++17/20 interop
Fix:
MODIFY
src/lcf/span.h
src/lcf/span.h
#define span_FEATURE_WITH_CONTAINER 1
#define span_FEATURE_CONSTRUCTION_FROM_STDARRAY_ELEMENT_TYPE 1
#define span_FEATURE_MAKE_SPAN 1
+#define span_CONFIG_SLECT_SPAN span_SPAN_NONSTD
#include <lcf/third_party/span.h>
namespace lcf {

MODIFY
src/lcf/string_view.h
src/lcf/string_view.h
#define nssv_CONFIG_NO_EXCEPTIONS 1
#define nssv_CONFIG_CONVERSION_STD_STRING 1
+#define nssv_CONFIG_SELECT_STRING_VIEW nssv_STRING_VIEW_NONSTD
#include <lcf/third_party/string_view.h>
namespace lcf {

Force nonstd sting_view and span to fix C++17/20 interop

Fix: #398