update core

Author: HSGamer

pom.xml

@@ -15,7 +15,7 @@
 
   <properties>
     <java.version>1.8</java.version>
-    <core.version>4.5.3</core.version>
+    <core.version>4.5.4</core.version>
     <minelib.version>1.2.2</minelib.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>