diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 00000000..864c7fcb
--- /dev/null
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
diff --git a/change-proneness-ranker/pom.xml b/change-proneness-ranker/pom.xml
index 8dac3250..66f122ce 100644
--- a/change-proneness-ranker/pom.xml
+++ b/change-proneness-ranker/pom.xml
@@ -1,37 +1,28 @@
 
 
-    4.0.0
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    org.hjug.refactorfirst.changepronenessranker
-    change-proneness-ranker
-
-    
-        
-            
-                ${project.basedir}/src/test/resources
-            
-        
-    
-
-    
-
-        
-            org.eclipse.jgit
-            org.eclipse.jgit
-        
-
-        
-            org.hjug.refactorfirst.testresources
-            test-resources
-        
-
-
-    
-
-
\ No newline at end of file
+  4.0.0
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  org.hjug.refactorfirst.changepronenessranker
+  change-proneness-ranker
+  
+    
+      org.eclipse.jgit
+      org.eclipse.jgit
+    
+    
+      org.hjug.refactorfirst.testresources
+      test-resources
+    
+  
+  
+    
+      
+        ${project.basedir}/src/test/resources
+      
+    
+  
+
diff --git a/cost-benefit-calculator/pom.xml b/cost-benefit-calculator/pom.xml
index a1112629..00d0feaa 100644
--- a/cost-benefit-calculator/pom.xml
+++ b/cost-benefit-calculator/pom.xml
@@ -1,32 +1,25 @@
 
 
-    4.0.0
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    org.hjug.refactorfirst.costbenefitcalculator
-    cost-benefit-calculator
-
-    
-        
-            org.hjug.refactorfirst.changepronenessranker
-            change-proneness-ranker
-        
-
-        
-            org.hjug.refactorfirst.effortranker
-            effort-ranker
-        
-
-        
-            org.hjug.refactorfirst.testresources
-            test-resources
-        
-
-    
-
-
\ No newline at end of file
+  4.0.0
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  org.hjug.refactorfirst.costbenefitcalculator
+  cost-benefit-calculator
+  
+    
+      org.hjug.refactorfirst.changepronenessranker
+      change-proneness-ranker
+    
+    
+      org.hjug.refactorfirst.effortranker
+      effort-ranker
+    
+    
+      org.hjug.refactorfirst.testresources
+      test-resources
+    
+  
+
diff --git a/coverage/pom.xml b/coverage/pom.xml
index e698e99b..74292693 100644
--- a/coverage/pom.xml
+++ b/coverage/pom.xml
@@ -1,66 +1,54 @@
 
 
-    4.0.0
-
-    
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    coverage
-
-    Compute aggregated test code coverage
-
-    
-        true
-    
-
-    
-        
-            org.hjug.refactorfirst.changepronenessranker
-            change-proneness-ranker
-        
-
-        
-            org.hjug.refactorfirst.effortranker
-            effort-ranker
-        
-
-        
-            org.hjug.refactorfirst.costbenefitcalculator
-            cost-benefit-calculator
-        
-
-        
-            org.hjug.refactorfirst.graphdatagenerator
-            graph-data-generator
-        
-
-        
-            org.hjug.refactorfirst.plugin
-            refactor-first-maven-plugin
-        
-    
-
-    
-        
-            
-                org.jacoco
-                jacoco-maven-plugin
-                0.8.6
-                
-                    
-                        report-aggregate
-                        verify
-                        
-                            report-aggregate
-                        
-                    
-                
-            
-        
-    
-
\ No newline at end of file
+  4.0.0
+  
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  coverage
+  Compute aggregated test code coverage
+  
+    true
+  
+  
+    
+      org.hjug.refactorfirst.changepronenessranker
+      change-proneness-ranker
+    
+    
+      org.hjug.refactorfirst.costbenefitcalculator
+      cost-benefit-calculator
+    
+    
+      org.hjug.refactorfirst.effortranker
+      effort-ranker
+    
+    
+      org.hjug.refactorfirst.graphdatagenerator
+      graph-data-generator
+    
+    
+      org.hjug.refactorfirst.plugin
+      refactor-first-maven-plugin
+    
+  
+  
+    
+      
+        org.jacoco
+        jacoco-maven-plugin
+        
+          
+            report-aggregate
+            
+              report-aggregate
+            
+            verify
+          
+        
+      
+    
+  
+
diff --git a/effort-ranker/pom.xml b/effort-ranker/pom.xml
index 5aad7f91..a6853066 100644
--- a/effort-ranker/pom.xml
+++ b/effort-ranker/pom.xml
@@ -1,36 +1,28 @@
 
 
-    4.0.0
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    org.hjug.refactorfirst.effortranker
-    effort-ranker
-
-    
-        
-            net.sourceforge.pmd
-            pmd-java
-        
-
-        
-            org.hjug.refactorfirst.testresources
-            test-resources
-            0.3.1-SNAPSHOT
-        
-
-        
-            org.slf4j
-            slf4j-api
-            jar
-            1.7.2
-        
-
-    
-
-    
-
\ No newline at end of file
+  4.0.0
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  org.hjug.refactorfirst.effortranker
+  effort-ranker
+  
+    
+      net.sourceforge.pmd
+      pmd-java
+    
+    
+      org.hjug.refactorfirst.testresources
+      test-resources
+      0.3.1-SNAPSHOT
+    
+    
+      org.slf4j
+      slf4j-api
+      1.7.2
+      jar
+    
+  
+
diff --git a/graph-data-generator/pom.xml b/graph-data-generator/pom.xml
index 3415eea6..3a574c65 100644
--- a/graph-data-generator/pom.xml
+++ b/graph-data-generator/pom.xml
@@ -1,22 +1,18 @@
 
 
-    4.0.0
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    org.hjug.refactorfirst.graphdatagenerator
-    graph-data-generator
-
-    
-        
-            org.hjug.refactorfirst.costbenefitcalculator
-            cost-benefit-calculator
-            0.3.1-SNAPSHOT
-        
-    
-
-
\ No newline at end of file
+  4.0.0
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  org.hjug.refactorfirst.graphdatagenerator
+  graph-data-generator
+  
+    
+      org.hjug.refactorfirst.costbenefitcalculator
+      cost-benefit-calculator
+      0.3.1-SNAPSHOT
+    
+  
+
diff --git a/mvnw b/mvnw
new file mode 100755
index 00000000..5643201c
--- /dev/null
+++ b/mvnw
@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`\\unset -f command; \\command -v java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/mvnw.cmd b/mvnw.cmd
new file mode 100644
index 00000000..23b7079a
--- /dev/null
+++ b/mvnw.cmd
@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%
diff --git a/pom.xml b/pom.xml
index 1454956a..27b1ff02 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,499 +1,475 @@
 
 
-    4.0.0
-
-    org.hjug.refactorfirst
-    refactor-first
-    0.3.1-SNAPSHOT
-    pom
-
-    https://github.com/jimbethancourt/RefactorFirst
-
-    RefactorFirst
-    
-        Plugin that identifies God classes in a codebase and suggests which classes should be refactored first.
+  4.0.0
+  org.hjug.refactorfirst
+  refactor-first
+  0.3.1-SNAPSHOT
+  pom
+  RefactorFirst
+  Plugin that identifies God classes in a codebase and suggests which classes should be refactored first.
         Generates a graph and a table providing (hopefully) easy to understand guidance.
-        Can be used via command line, as a build plugin, or as a report plugin.
-    
-
-    
-        
-            Apache License 2.0
-             http://www.apache.org/licenses/
-            repo
-        
-    
-
-    
-        
-            Jim Bethancourt
-            jimbethancourt@gmail.com
-            Houston Java Users Group
-            http://www.hjug.org
-            
-                developer
-            
-            CST
-        
-    
-
-    
-        scm:git:https://github.com/jimbethancourt/RefactorFirst
-        scm:git:https://github.com/jimbethancourt/RefactorFirst
-        https://github.com/jimbethancourt/RefactorFirst
-      HEAD
+        Can be used via command line, as a build plugin, or as a report plugin.
+  https://github.com/jimbethancourt/RefactorFirst
+  
+    
+      Apache License 2.0
+      http://www.apache.org/licenses/
+      repo
+    
+  
+  
+    
+      Jim Bethancourt
+      jimbethancourt@gmail.com
+      Houston Java Users Group
+      http://www.hjug.org
+      
+        developer
+      
+      CST
+    
+  
+  
+    test-resources
+    change-proneness-ranker
+    effort-ranker
+    cost-benefit-calculator
+    graph-data-generator
+    refactor-first-maven-plugin
+    
+    coverage
+  
+  
+    scm:git:https://github.com/jimbethancourt/RefactorFirst
+    scm:git:https://github.com/jimbethancourt/RefactorFirst
+    HEAD
+    https://github.com/jimbethancourt/RefactorFirst
   
-
-    
-        GitHub
-        https://github.com/jimbethancourt/RefactorFirst/issues
-    
-
-    
-        UTF-8
-        1.8
-        1.8
-
-        
-        9+181-r4173-1
-
-        
-        2.5.1
-        1.18.12
-
-        4.0.0
-        4.0.3
-        1.10.1
-
-
-
-        jimbethancourt_RefactorFirst
-        ${project.artifactId}
-        jimbethancourt-github
-        https://sonarcloud.io
-
-        3.8.2
-    
-
-    
-        test-resources
-        change-proneness-ranker
-        effort-ranker
-        cost-benefit-calculator
-        graph-data-generator
-        refactor-first-maven-plugin
-        
-        coverage
-    
-
-    
-        
-            
-                org.hjug.refactorfirst.changepronenessranker
-                change-proneness-ranker
-                ${project.version}
-            
-
-            
-                org.hjug.refactorfirst.effortranker
-                effort-ranker
-                ${project.version}
-            
-
-            
-                org.hjug.refactorfirst.costbenefitcalculator
-                cost-benefit-calculator
-                ${project.version}
-            
-
-            
-                org.hjug.refactorfirst.graphdatagenerator
-                graph-data-generator
-                ${project.version}
-            
-
-            
-                org.hjug.refactorfirst.plugin
-                refactor-first-maven-plugin
-                ${project.version}
-            
-
-            
-                org.hjug.refactorfirst.testresources
-                test-resources
-                ${project.version}
-                test
-            
-
-            
-                org.eclipse.jgit
-                org.eclipse.jgit
-                5.10.0.202012080955-r
-                compile
-            
-
-            
-                net.sourceforge.pmd
-                pmd-java
-                6.46.0
-                compile
-
-                
-                    
-                        com.beust
-                        jcommander
-                    
-                    
-                    
-                        net.sourceforge.saxon
-                        saxon
-                    
-                
-            
-
-            
-                com.fasterxml.jackson.core
-                jackson-databind
-                2.13.2.2
-            
-            
-        
-    
-
-
+  
+    GitHub
+    https://github.com/jimbethancourt/RefactorFirst/issues
+  
+  
+    
+    2.5.1
+    1.10.1
+    
+    9+181-r4173-1
+    1.18.12
+    1.8
+    1.8
+    3.8.7
+    UTF-8
+    https://sonarcloud.io
+    ${project.artifactId}
+    jimbethancourt-github
+    jimbethancourt_RefactorFirst
+    4.4.2
+    4.0.3
+  
+  
     
-
-        
-            org.mockito
-            mockito-core
-            3.4.4
-            test
-        
-
-        
-            org.junit.jupiter
-            junit-jupiter-api
-            5.9.0
-            test
-        
-
-        
-            org.junit.jupiter
-            junit-jupiter-engine
-            5.9.0
-            test
-        
-
-        
-            org.projectlombok
-            lombok
-            ${lombok.version}
-            true
-        
-
+      
+        com.fasterxml.jackson.core
+        jackson-databind
+        2.13.2.2
+      
+      
+        net.sourceforge.pmd
+        pmd-java
+        6.46.0
+        compile
+        
+          
+            com.beust
+            jcommander
+          
+          
+          
+            net.sourceforge.saxon
+            saxon
+          
+        
+      
+      
+        org.eclipse.jgit
+        org.eclipse.jgit
+        5.10.0.202012080955-r
+        compile
+      
+      
+        org.hjug.refactorfirst.changepronenessranker
+        change-proneness-ranker
+        ${project.version}
+      
+      
+        org.hjug.refactorfirst.costbenefitcalculator
+        cost-benefit-calculator
+        ${project.version}
+      
+      
+        org.hjug.refactorfirst.effortranker
+        effort-ranker
+        ${project.version}
+      
+      
+        org.hjug.refactorfirst.graphdatagenerator
+        graph-data-generator
+        ${project.version}
+      
+      
+        org.hjug.refactorfirst.plugin
+        refactor-first-maven-plugin
+        ${project.version}
+      
+      
+        org.hjug.refactorfirst.testresources
+        test-resources
+        ${project.version}
+        test
+      
+      
     
-
-    
-        
-            
-                org.apache.maven.plugins
-                maven-compiler-plugin
-                3.8.1
-                
-                    8
-                    8
-                    
-                        -XDcompilePolicy=simple
-                        -Xplugin:ErrorProne
-                    
-                    
-                        
-                            org.projectlombok
-                            lombok
-                            ${lombok.version}
-                        
-                        
-                            com.google.errorprone
-                            error_prone_core
-                            ${errorprone.version}
-                        
-                    
-                
-            
-
-            
-                org.jacoco
-                jacoco-maven-plugin
-                0.8.6
-                
-                    
-                    
-                        default-prepare-agent
-                        
-                            prepare-agent
-                        
-                    
-
-                    
-                    
-                        report
-                        verify
-                        
-                            report
-                        
-                    
-
-                    
-                        csvreport
-                        verify
-                        
-                            report
-                        
-                    
-                
-            
-
-            
-            
-            
-                org.apache.maven.plugins
-                maven-site-plugin
-                3.7.1
-            
-
-            
-                org.apache.maven.plugins
-                maven-project-info-reports-plugin
-                3.0.0
-            
-
-            
+  
+  
+    
+      org.junit.jupiter
+      junit-jupiter-api
+      5.9.0
+      test
+    
+    
+      org.junit.jupiter
+      junit-jupiter-engine
+      5.9.0
+      test
+    
+    
+      org.mockito
+      mockito-core
+      3.4.4
+      test
+    
+    
+      org.projectlombok
+      lombok
+      ${lombok.version}
+      true
+    
+  
+  
+    
+      
+      
+      
+        com.diffplug.spotless
+        spotless-maven-plugin
+        2.31.0
+        
+          
+            
+            
+              
+              
+                *.java
+              
+              
+              
+              
+              
+                true
+                4
+              
+            
+          
+          
+            
+          
+        
+        
+          
+            
+              apply
+            
+            initialize
+          
+        
+      
+      
+        com.github.ekryd.sortpom
+        sortpom-maven-plugin
+        3.2.1
+        
+          \n
+          ${project.build.sourceEncoding}
+          true
+          true
+          false
+          groupId,artifactId
+          groupId,artifactId
+          false
+          false
+          false
+          false
+        
+        
+          
+            project
+            
+              sort
+            
+            validate
+          
+        
+      
+      
+      
+        com.github.spotbugs
+        spotbugs-maven-plugin
+        ${spotbugs.maven.plugin.version}
+        
+          Max
+          Low
+          true
+          
+          
             
-                com.github.spotbugs
-                spotbugs-maven-plugin
-                ${spotbugs.maven.plugin.version}
-                
-                    
-                        com.github.spotbugs
-                        spotbugs
-                        ${spotbugs.version}
-                    
-                
-                
-                    Max
-                    Low
-                    true
-                    
-                    
-                        
-                            com.h3xstream.findsecbugs
-                            findsecbugs-plugin
-                            ${findsecbugs.plugin.version}
-                        
-                    
-                
-                
-                
-            
-            
-                org.owasp
-                dependency-check-maven
-                6.1.0
-                
-                    8.0
-                
-                
-                    
-                        
-                            check
-                        
-                    
-                
+              com.h3xstream.findsecbugs
+              findsecbugs-plugin
+              ${findsecbugs.plugin.version}
             
-            
-            
-
-            
-                com.diffplug.spotless
-                spotless-maven-plugin
-                2.22.1
+          
+        
+        
+          
+            com.github.spotbugs
+            spotbugs
+            ${spotbugs.version}
+          
+        
+        
+        
+      
+      
+        org.apache.maven.plugins
+        maven-compiler-plugin
+        3.10.1
+        
+          8
+          8
+          
+            -XDcompilePolicy=simple
+            -Xplugin:ErrorProne
+          
+          
+            
+              org.projectlombok
+              lombok
+              ${lombok.version}
+            
+            
+              com.google.errorprone
+              error_prone_core
+              ${errorprone.version}
+            
+          
+        
+      
+      
+        org.apache.maven.plugins
+        maven-project-info-reports-plugin
+        3.4.1
+      
+      
+      
+      
+        org.apache.maven.plugins
+        maven-site-plugin
+        4.0.0-M3
+      
+      
+        org.jacoco
+        jacoco-maven-plugin
+        0.8.8
+        
+          
+          
+            default-prepare-agent
+            
+              prepare-agent
+            
+          
+          
+            csvreport
+            
+              report
+            
+            verify
+          
+          
+          
+            report
+            
+              report
+            
+            verify
+          
+        
+      
+      
+        org.owasp
+        dependency-check-maven
+        7.3.0
+        
+          8.0
+        
+        
+          
+            
+              check
+            
+          
+        
+      
+    
+  
+  
+  
+    
+      jdk8
+      
+        1.8
+      
+      
+        
+          
+            org.apache.maven.plugins
+            maven-compiler-plugin
+            
+              true
+              
+                -J-Xbootclasspath/p:${settings.localRepository}/com/google/errorprone/javac/${javac.version}/javac-${javac.version}.jar
+              
+            
+          
+        
+      
+    
+    
+      snapshot-release
+      
+        
+          ossrh
+          https://oss.sonatype.org/content/repositories/snapshots
+        
+      
+      
+        
+          
+            org.apache.maven.plugins
+            maven-release-plugin
+            3.0.0-M7
+            
+              https://oss.sonatype.org/content/repositories/snapshots/
+            
+          
+        
+      
+    
+    
+      publish
+      
+        
+          ossrh
+          https://oss.sonatype.org/service/local/staging/deploy/maven2/
+        
+        
+          ossrh
+          https://oss.sonatype.org/content/repositories/snapshots
+        
+      
+      
+        
+          
+            
+            org.apache.maven.plugins
+            maven-gpg-plugin
+            3.0.1
+            
+              
+                sign-artifacts
+                
+                  sign
+                
+                verify
                 
-                    
-                        
-                        
-                            
-                            
-                                *.java
-                            
-                            
-                            
-                            
-                            
-                                true
-                                4
-                            
-                        
-                    
-                    
-                        
-                    
+                  
+                  
+                    --pinentry-mode
+                    loopback
+                  
                 
-                
-                    
-                        
-                            apply
-                        
-                        initialize
-                    
-                
-            
+              
+            
+          
+          
+            org.apache.maven.plugins
+            maven-javadoc-plugin
+            3.4.1
+            
+              
+                attach-javadocs
+                
+                  jar
+                
+              
+            
+          
+          
+            org.apache.maven.plugins
+            maven-source-plugin
+            3.2.1
+            
+              
+                attach-sources
+                
+                  jar
+                
+              
+            
+          
+          
+            org.sonatype.plugins
+            nexus-staging-maven-plugin
+            1.6.13
+            true
+            
+              ossrh
+              https://oss.sonatype.org/
+              true
+            
+          
         
-    
-
-
-    
-    
-        
-            jdk8
-            
-                1.8
-            
-            
-                
-                    
-                        org.apache.maven.plugins
-                        maven-compiler-plugin
-                        
-                            true
-                            
-                                
-                                    -J-Xbootclasspath/p:${settings.localRepository}/com/google/errorprone/javac/${javac.version}/javac-${javac.version}.jar
-                                
-                            
-                        
-                    
-                
-            
-        
-        
-            snapshot-release
-            
-                
-                    
-                        org.apache.maven.plugins
-                        maven-release-plugin
-                        2.5.3
-                        
-                            https://oss.sonatype.org/content/repositories/snapshots/
-                        
-                    
-                
-            
-            
-                
-                    ossrh
-                    https://oss.sonatype.org/content/repositories/snapshots
-                
-            
-        
-        
-            publish
-            
-                
-                    
-                        org.apache.maven.plugins
-                        maven-source-plugin
-                        3.0.1
-                        
-                            
-                                attach-sources
-                                
-                                    jar
-                                
-                            
-                        
-                    
-                    
-                        org.apache.maven.plugins
-                        maven-javadoc-plugin
-                        3.0.0
-                        
-                            
-                                attach-javadocs
-                                
-                                    jar
-                                
-                            
-                        
-                    
-                    
-                        
-                        org.apache.maven.plugins
-                        maven-gpg-plugin
-                        1.6
-                        
-                            
-                                sign-artifacts
-                                verify
-                                
-                                    sign
-                                
-                                
-                                    
-                                    
-                                        --pinentry-mode
-                                        loopback
-                                    
-                                
-                            
-                        
-                    
-                    
-                        org.sonatype.plugins
-                        nexus-staging-maven-plugin
-                        1.6.8
-                        true
-                        
-                            ossrh
-                            https://oss.sonatype.org/
-                            true
-                        
-                    
-                
-            
-            
-                
-                    ossrh
-                    https://oss.sonatype.org/service/local/staging/deploy/maven2/
-                
-                
-                    ossrh
-                    https://oss.sonatype.org/content/repositories/snapshots
-                
-            
-        
-    
-
-
-
-
+      
+    
+  
 
diff --git a/refactor-first-maven-plugin/pom.xml b/refactor-first-maven-plugin/pom.xml
index f16bf5bd..b6250e27 100644
--- a/refactor-first-maven-plugin/pom.xml
+++ b/refactor-first-maven-plugin/pom.xml
@@ -1,70 +1,62 @@
 
 
-    4.0.0
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    org.hjug.refactorfirst.plugin
-    refactor-first-maven-plugin
-    maven-plugin
-
-    
-        
-            org.hjug.refactorfirst.graphdatagenerator
-            graph-data-generator
-        
-
-        
-        
-            org.apache.maven
-            maven-core
-            ${maven.core.version}
-        
-
-        
-            org.apache.maven.plugin-tools
-            maven-plugin-annotations
-            3.6.1
-            provided
-        
-
-        
-            com.fasterxml.jackson.core
-            jackson-databind
-        
-    
-
-    
-        
-            
-                maven-install-plugin
-                2.5.2
-            
-            
-                org.apache.maven.plugins
-                maven-plugin-plugin
-                3.5.1
-                
-                    refactor-first
-                
-                
-                    
-                        default-descriptor
-                        process-classes
-                    
-                    
-                        generated-helpmojo
-                        
-                            helpmojo
-                        
-                    
-                
-            
-        
-    
-    
-
\ No newline at end of file
+  4.0.0
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  org.hjug.refactorfirst.plugin
+  refactor-first-maven-plugin
+  maven-plugin
+  
+    
+      com.fasterxml.jackson.core
+      jackson-databind
+    
+    
+    
+      org.apache.maven
+      maven-core
+      ${maven.core.version}
+      provided
+    
+    
+      org.apache.maven.plugin-tools
+      maven-plugin-annotations
+      3.7.1
+      provided
+    
+    
+      org.hjug.refactorfirst.graphdatagenerator
+      graph-data-generator
+    
+  
+  
+    
+      
+        maven-install-plugin
+      
+      
+        org.apache.maven.plugins
+        maven-plugin-plugin
+        3.7.1
+        
+          refactor-first
+        
+        
+          
+            generated-helpmojo
+            
+              helpmojo
+            
+          
+          
+            default-descriptor
+            process-classes
+          
+        
+      
+    
+  
+
diff --git a/test-resources/pom.xml b/test-resources/pom.xml
index e0144dee..dea68dff 100644
--- a/test-resources/pom.xml
+++ b/test-resources/pom.xml
@@ -1,14 +1,11 @@
 
 
-    4.0.0
-
-    
-        org.hjug.refactorfirst
-        refactor-first
-        0.3.1-SNAPSHOT
-    
-
-    org.hjug.refactorfirst.testresources
-    test-resources
-
-
\ No newline at end of file
+  4.0.0
+  
+    org.hjug.refactorfirst
+    refactor-first
+    0.3.1-SNAPSHOT
+  
+  org.hjug.refactorfirst.testresources
+  test-resources
+