diff -r 30b840ed8c0e -r 822b7e3d064d src/main/java/de/uapcore/lightpit/entities/VersionStatistics.java
--- a/src/main/java/de/uapcore/lightpit/entities/VersionStatistics.java	Fri Oct 23 18:40:50 2020 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,101 +0,0 @@
-/*
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
- *
- * Copyright 2018 Mike Becker. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *   1. Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *
- *   2. Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in the
- *      documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- */
-package de.uapcore.lightpit.entities;
-
-public class VersionStatistics {
-
-    private final Version version;
-    private int[][] issueCount;
-
-    private int[] rowTotals = null;
-    private int[] columnTotals = null;
-    private int total = -1;
-
-    public VersionStatistics(Version version) {
-        this.version = version;
-        issueCount = new int[IssueCategory.values().length][IssueStatus.values().length];
-    }
-
-    public Version getVersion() {
-        return version;
-    }
-
-    public void setIssueCount(IssueCategory category, IssueStatus status, int count) {
-        issueCount[category.ordinal()][status.ordinal()] = count;
-        total = -1;
-        rowTotals = columnTotals = null;
-    }
-
-    public int[][] getIssueCount() {
-        return issueCount;
-    }
-
-    public int[] getRowTotals() {
-        if (rowTotals != null) return rowTotals;
-        final int cn = IssueCategory.values().length;
-        final int sn = IssueStatus.values().length;
-        final var totals = new int[cn];
-        for (int i = 0 ; i < cn ; i++) {
-            totals[i] = 0;
-            for (int j = 0 ; j < sn ; j++) {
-                totals[i] += issueCount[i][j];
-            }
-        }
-        return rowTotals = totals;
-    }
-
-    public int[] getColumnTotals() {
-        if (columnTotals != null) return columnTotals;
-        final int cn = IssueCategory.values().length;
-        final int sn = IssueStatus.values().length;
-        final var totals = new int[sn];
-        for (int i = 0 ; i < sn ; i++) {
-            totals[i] = 0;
-            for (int j = 0 ; j < cn ; j++) {
-                totals[i] += issueCount[j][i];
-            }
-        }
-        return columnTotals = totals;
-    }
-
-    public int getTotal() {
-        if (this.total >= 0) {
-            return this.total;
-        }
-        int total = 0;
-        final int cn = IssueCategory.values().length;
-        final int sn = IssueStatus.values().length;
-        for (int i = 0 ; i < sn ; i++) {
-            for (int j = 0 ; j < cn ; j++) {
-                total += issueCount[j][i];
-            }
-        }
-        return this.total = total;
-    }
-}