context FETAURE yang-library data generation

Also added list of deriving modules for each module.
diff --git a/src/tree_schema_free.c b/src/tree_schema_free.c
index c6406bf..957082c 100644
--- a/src/tree_schema_free.c
+++ b/src/tree_schema_free.c
@@ -844,6 +844,7 @@
     FREE_ARRAY(ctx, module->rpcs, lysc_action_free);
     FREE_ARRAY(ctx, module->notifs, lysc_notif_free);
     FREE_ARRAY(ctx, module->exts, lysc_ext_instance_free);
+    LY_ARRAY_FREE(module->deviated_by);
 
     free(module);
 }