Updates core to use core-1.0.1 instead of core.

Signed-off-by: Vincent Zanotti <vincent.zanotti@m4x.org>

diff --git a/core b/core
index ebde1ae..af1a019 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit ebde1aef351c87babbc242d8a799073666b3cbe1
+Subproject commit af1a0198359e5181c87e0a381fabd30dbf954f40