:art: CoreUtil.dirname

diff --git a/plug b/plug
index 4f4513085006fd3fa497132273cacbe278108ed5..a9e31522bc4daa3091aa2744fc6c2474b6e0c860 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit 4f4513085006fd3fa497132273cacbe278108ed5
+Subproject commit a9e31522bc4daa3091aa2744fc6c2474b6e0c860