Merge branch 'master' into jgrpp

# Conflicts:
#	src/cargotype.h
#	src/core/CMakeLists.txt
#	src/core/span_type.hpp
#	src/fileio.cpp
#	src/fios.cpp
#	src/misc/endian_buffer.hpp
#	src/misc_gui.cpp
#	src/saveload/saveload.h
#	src/saveload/vehicle_sl.cpp
#	src/screenshot.cpp
#	src/settings.cpp
#	src/settings_internal.h
#	src/stdafx.h
#	src/string_func.h
#	src/strings.cpp
#	src/strings_func.h
#	src/strings_internal.h

src/stdafx.h

@@ -56,6 +56,7 @@
 #include <climits>
 #include <cassert>
 #include <memory>
+#include <span>
 #include <string>
 #include <inttypes.h>