resolve CHANGE flag to allow ext deps to not be satisfied
diff --git a/src/tree_data.h b/src/tree_data.h
index 67c81b7..5996477 100644
--- a/src/tree_data.h
+++ b/src/tree_data.h
@@ -469,6 +469,8 @@
                                        applicable only in combination with LYD_OPT_DATA and LYD_OPT_CONFIG flags.
                                        If used, libyang generates validation error instead of silently removing the
                                        constrained subtree. */
+#define LYD_OPT_NOEXTDEPS  0x8000 /**< Allow external dependencies (external leafrefs, instance-identifiers, must,
+                                       and when) to not be resolved/satisfiedduring validation. */
 
 /**@} parseroptions */