Update core

Signed-off-by: Florent Bruneau <florent.bruneau@polytechnique.org>

diff --git a/core b/core
index 989c75f..40b79bf 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 989c75f3f95b2e8e7260fe10a7f94d0fde958469
+Subproject commit 40b79bfc4a940747b434d9611601007d7026b473