Updates hydra: 4eec4ad Adds back TODO

diff --git a/hydra b/hydra
index afb99b7bf4ca9a30189fc2ba4bffdca23848db6b..4eec4ad9f547b987c686c07d90d51bbbf547f508 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit afb99b7bf4ca9a30189fc2ba4bffdca23848db6b
+Subproject commit 4eec4ad9f547b987c686c07d90d51bbbf547f508