Added support for Python 3. (Roland Puntaier)
diff --git a/src/proto.h b/src/proto.h
index d9c0091..40fb2a9 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -186,6 +186,10 @@
 #  include "if_python.pro"
 # endif
 
+# ifdef FEAT_PYTHON3
+#  include "if_python3.pro"
+# endif
+
 # ifdef FEAT_TCL
 #  include "if_tcl.pro"
 # endif