Continued:

- re-added $databaseInstance from monolithic BaseFrameworkSystem
- BaseFrameworkSystem->hex2dec() has moved to StringUtils::hex2dec()
- updated core framework

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

diff --git a/core b/core
index dd1cef3878259d544e9853b1c0f5abca1f0d99b1..a1dfd448376c05e2a5ee2af1538c2e38f42983e4 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit dd1cef3878259d544e9853b1c0f5abca1f0d99b1
+Subproject commit a1dfd448376c05e2a5ee2af1538c2e38f42983e4