Merge remote-tracking branch 'origin/master' into feature/v2.0

# Conflicts:
#	src/webserver.cpp
#	test/Makefile.am
#	test/unit/post_iterator_null_key_test.cpp

Author: etr

ChangeLog

@@ -76,6 +76,9 @@ Version 0.20.0
 	Fixed std::terminate when MHD invokes the URI log callback with a
 		null uri pointer (e.g. port scans, half-open connections, or
 		non-HTTP traffic). Resolves issue #371.
+	Fixed std::terminate when MHD invokes the post-processor iterator with
+		a null key on a continuation chunk (a field split across multiple
+		callbacks). Resolves issue #375.
 
 Version 0.19.0 - 2023-06-15