fix: rollback ArrayTools because less is more

src/main/java/uulm/teamname/marvelous/gamelibrary/ArrayTools.java

@@ -1,7 +1,6 @@
 package uulm.teamname.marvelous.gamelibrary;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 
 /** Provides various tools for Arrays. */
 public class ArrayTools {
@@ -14,7 +13,12 @@ public class ArrayTools {
      */
     public static <E> ArrayList<E> toArrayList(E[] a) {
         ArrayList<E> l = new ArrayList<>(a.length);
-        l.addAll(Arrays.asList(a));
+        //faster than Collections.addAll(l, a); because it doesn't do any boolean operations
+        //noinspection ManualArrayToCollectionCopy
+        for(E e: a) {
+            //noinspection UseBulkOperation
+            l.add(e);
+        }
         return l;
     }
 }