Continued:

- updated 'core'

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

diff --git a/core b/core
index 1956ac6a5f89588c5cf1e10c0cbd0a14915c4646..f57dd51863ec9baacba447d76b46d5c709b9b02e 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 1956ac6a5f89588c5cf1e10c0cbd0a14915c4646
+Subproject commit f57dd51863ec9baacba447d76b46d5c709b9b02e