Updated core.

Signed-off-by: Roland Haeder <roland@mxchange.org>

diff --git a/core b/core
index bc1160b89c811d6e36a90be9d2fd3c1e13e01543..f2b20fb2751e539c238464eba533c47f484d7ee7 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit bc1160b89c811d6e36a90be9d2fd3c1e13e01543
+Subproject commit f2b20fb2751e539c238464eba533c47f484d7ee7