diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 02e38ec..a235f9e 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -27,7 +27,7 @@ jobs:
           strip_v: false
 
       - name: "create tikz-trackschematic package"
-        run: ./create-release.sh -v ${{ steps.tag.outputs.tag }}
+        run: ./build.sh --batch-mode --release ${{ steps.tag.outputs.tag }}
       
       - name: "create release"
         id: create_release
diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index d2cf946..63ffefa 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -37,7 +37,7 @@ jobs:
           packages-path: ${{ github.workspace }}/.github/tex/packages.test.txt
 
       - name: "install tikz-trackschematic"
-        run: ./dev-install.sh -b
+        run: ./build.sh --batch-mode --local-dev-install
 
       - name: "test tikz-trackschematic"
-        run: cd test && ./testing.sh
+        run: ./build.sh --test --verbose
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..01815cf
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,667 @@
+#!/usr/bin/env sh
+
+# Copyright (c) 2018 - 2022, Martin Scheidt (ISC license)
+# Permission to use, copy, modify, and/or distribute this file for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
+
+#
+# Variables in upper case, e.g.: $VARIABLE
+# Functions in lower case as action with underscore, e.g.: do_something
+#
+# Halt on error
+set -e
+
+## -- print usage
+print_usage() {
+cat << EOF  
+Usage: ./build.sh [OPTIONS]
+install, test or release a package for tikz-trackschematic
+
+ -h, --help               Display help
+
+ -v, --verbose            Run script in verbose mode.
+
+ -b, --batch-mode         Run script with no interaction.
+
+ -l, --local-dev-install  Install as dev-package in local TeX Live environment
+
+ -t, --test               Tests the current src/ against the test/
+
+ -r, --release VERSION    Creates a .zip with the release for given VERSION
+                          Semantic Versioning with leading 'v', e.g: v1.0.0
+
+EOF
+}
+
+## -- processes getopts
+
+VERBOSE=0
+BATCHMODE=0
+INSTALL=0
+TESTING=0
+RELEASE=0
+
+process_arguments() {
+  while true; do
+    if [ -z "$1" ]; then
+      break;
+    fi
+    case $1 in
+      -h|--help)
+        print_usage
+        exit 0
+        ;;
+      -v|--verbose)
+        VERBOSE=1
+        ;;
+      -b|--batch-mode)
+        BATCHMODE=1
+        ;;
+      -l|--local-dev-install)
+        INSTALL=1
+        ;;
+      -t|--test)
+        TESTING=1
+        ;;
+      -r|--release)
+        RELEASE=1
+        shift
+        VERSION_STR=$1
+        ;;
+      *)
+        print_usage
+        exit 1
+        ;;
+    esac
+    shift
+  done
+}
+
+## -- colors
+RED="\033[0;31m"
+GREEN="\033[0;32m"
+COLOR_RESET="\033[0;m"
+
+## -- cross platform helpers
+
+if [ "`echo -n`" = "-n" ]; then
+  n=""; c="\c"
+else
+  n="-n"; c=""
+fi
+
+# https://stackoverflow.com/questions/2320564/sed-i-command-for-in-place-editing-to-work-with-both-gnu-sed-and-bsd-osx
+sedi () {
+  sed --version >/dev/null 2>&1 && sed -i -- "$@" || sed -i "" "$@"
+}
+
+## -- commands
+
+check_path() {
+  if [ ! -d ../tikz-trackschematic ]; then
+    echo "${RED}Please run this script from inside the project folder!${COLOR_RESET}"
+    exit 1
+  fi
+}
+
+check_zip() {
+  # check for zip
+  STATUS=0
+  command -v zip >/dev/null 2>&1 || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "zip found"
+    fi
+    return 0
+  fi
+  
+  echo "Program 'zip' not found."
+  echo "Be sure to have zip installed!"
+  exit 1
+}
+
+check_version_number() {
+  while [[ ! "$VERSION_STR" =~ ^v(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)?$ ]]; do
+    if [ "$BATCHMODE" = 0 ]; then
+      echo "${RED}Your version '$VERSION_STR' has not the correct format!${COLOR_RESET}"
+      echo $n "Please specify as Semantic Versioning ( e.g. v1.0.0 ): $c"
+      read VERSION_STR
+    else
+      echo "${RED}Your version '$VERSION_STR' has not the correct format!${COLOR_RESET}"
+      echo "Please use Semantic Versioning with leading 'v'"
+      exit 1
+    fi
+  done
+  # remove leading 'v'
+  VERSION_NUM=$(echo $VERSION_STR | cut -c 2-)
+}
+
+check_versionhistory() {
+  # check if $VERSION is present in doc/versionhistory.tex
+  STATUS=0
+  grep -qs "vhEntry{$VERSION_NUM" doc/versionhistory.tex || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "Version $VERSION_NUM is present in versionhistory.tex."
+    fi
+    return 0
+  fi
+  
+  echo "Version $VERSION_NUM not found in versionhistory.tex."
+  echo "Be sure to edit versionhistory.tex and specify current version!"
+  exit 1
+}
+
+check_changelog() {
+  # check if $VERSION is present in CHANGELOG.md
+  STATUS=0
+  grep -qs "Version \[$VERSION_NUM\]" CHANGELOG.md || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "Version $VERSION_NUM is present in CHANGELOG.md."
+    fi
+    return 0
+  fi
+  
+  echo "Version $VERSION_NUM not found in CHANGELOG.md."
+  echo "Be sure to edit CHANGELOG.md and specify current version!"
+  exit 1
+}
+
+check_date() {
+  ## extract DATE from versionhistory.tex and CHANGELOG.md
+  LINE_1=$(grep "vhEntry{$VERSION_NUM" doc/versionhistory.tex)
+  LINE_2=$(grep "Version \[$VERSION_NUM\]" CHANGELOG.md)
+  DATEISO_1=$(echo $LINE_1 | egrep -o '[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])')
+  DATEISO_2=$(echo $LINE_2 | egrep -o '[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])')
+
+  if [ $DATEISO_1 = $DATEISO_2 ]; then
+    # DATE=$(date "+%Y-%m-%d")
+    DATE="$DATEISO_1" 
+    if [ $VERBOSE = 1 ]; then
+      echo "The date $DATE was extracted from versionhistory.tex and CHANGELOG.md."
+    fi
+    return 0
+  fi
+  
+  echo "The date in versionhistory.tex and CHANGELOG.md did not match."
+  echo "Be sure to edit versionhistory.tex or CHANGELOG.md and modifiy the date!"
+  exit 1
+}
+
+check_url1() {
+  ## extract urls from CHANGELOG.md
+  STATUS=0
+  LINE=$(grep "\[$VERSION_NUM\]: https://" CHANGELOG.md)
+  echo $LINE | grep -qs "...$VERSION_STR"  || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "Version $VERSION_NUM URL is present in CHANGELOG.md."
+    fi
+    return 0
+  fi
+  
+  echo "Version $VERSION_NUM URL was not found in CHANGELOG.md."
+  echo "Be sure to edit CHANGELOG.md and specify a URL for the current version!"
+  exit 1
+}
+
+check_url2() {
+  ## extract urls from CHANGELOG.md
+  STATUS=0
+  LINE=$(grep "\[Unreleased\]: https://" CHANGELOG.md)
+  echo $LINE | grep -qs "/$VERSION_STR..."  || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "The URL for [Unreleased] was also updated in CHANGELOG.md! Thx!"
+    fi
+    return 0
+  fi
+  
+  echo "WARNING: URL for [Unreleased] in CHANGELOG.md does not reflect the current version $VERSION_NUM."
+  echo "WARNING: Be sure to edit CHANGELOG.md and specify current version!"
+
+  if [ "$BATCHMODE" -eq 0 ]; then
+    echo "Do you wish to continue without updated URL for [Unreleased]?"
+    echo $n "(y/n) $c"
+    while true; do
+      read -p "" answer
+      case $answer in
+        [Yy]* ) break;;
+        [Nn]* ) exit 1;;
+        * ) echo "Please answer yes or no.";;
+      esac
+    done
+  else
+    echo "ERROR: Aborting in batch mode!"
+    exit 1
+  fi
+}
+
+create_release() {
+  if [ $BATCHMODE = 0 ]; then
+    echo ""
+    echo "Do you wish to create a release for the version $VERSION_NUM?"
+    echo $n "(y/n) $c"
+    while true; do
+      read -p "" answer
+      case $answer in
+        [Yy]* ) break;;
+        [Nn]* ) exit 1;;
+        * ) echo "Please answer yes or no.";;
+      esac
+    done
+  fi
+
+  ## create backup-file und update VERSIONDATE in tikz-trackschematic.sty
+  sed -i".backup" -e"s/%\[VERSIONDATE/\[$DATE $VERSION_STR/g" src/tikz-trackschematic.sty
+  sedi "/%%\[SCRIPT\]/d" src/tikz-trackschematic.sty
+  if [ $VERBOSE = 1 ]; then
+    echo "Updated version in src/tikz-trackschematic.sty"
+  fi
+
+  ## -- create zip-archive
+  # create temporary folder
+  TMP=$RELEASE
+  mkdir -p $TMP
+
+  # copy README, CHANGELOG, LICENSE and CITATION
+  cp README.md $TMP/README.md
+  cp CHANGELOG.md $TMP/CHANGELOG.md
+  cp LICENSE $TMP/LICENSE
+  cp CITATION.cff $TMP/CITATION.cff
+
+  # copy and rename documentation
+  cp doc/tikz-trackschematic-documentation.sty  $TMP/
+  cp doc/manual.pdf  $TMP/tikz-trackschematic.pdf
+  cp doc/manual.tex  $TMP/tikz-trackschematic.tex
+  cp doc/snippets.pdf  $TMP/tikz-trackschematic-snippets.pdf
+  cp doc/snippets.tex  $TMP/tikz-trackschematic-snippets.tex
+  cp doc/symbology-table.pdf  $TMP/tikz-trackschematic-symbology-table.pdf
+  cp doc/symbology-table.tex  $TMP/tikz-trackschematic-symbology-table.tex
+  mkdir $TMP/tikz-trackschematic-examples
+  mkdir $TMP/tikz-trackschematic-snippets
+  cp -R doc/examples/*  $TMP/tikz-trackschematic-examples/
+  cp -R doc/snippets/*  $TMP/tikz-trackschematic-snippets/
+  if [ $VERBOSE = 1 ]; then
+    echo "copied documentation"
+  fi
+
+  # copy src-files
+  for SRC in src/*; do
+    EXT=${SRC##*.}
+    # do not copy backup created by sed
+    if [ $EXT != "backup" ]; then
+      cp $SRC $TMP/
+    fi
+  done
+  if [ $VERBOSE = 1 ]; then
+    echo "copied src-files"
+  fi
+
+  # zip package
+  if [ $VERBOSE = 1 ]; then
+    zip -r $RELEASE.zip $TMP/*
+    echo "compressed the release in $RELEASE.zip"
+  else
+    zip -r $RELEASE.zip $TMP/*  >/dev/null 2>&1
+  fi
+
+  ## -- cleanup
+  # remove TMP-folder
+  rm -rf $TMP
+  # undo changes to tikz-trackschematic.sty by sed
+  mv src/tikz-trackschematic.sty.backup src/tikz-trackschematic.sty
+  if [ $VERBOSE = 1 ]; then
+    echo "clean up done!"
+  fi
+}
+
+create_release_notes() {
+  if [ $BATCHMODE = 0 ]; then
+    echo ""
+    echo "Do you wish to create a release notes for the version $VERSION_NUM?"
+    echo $n "(y/n) $c"
+    while true; do
+      read -p "" answer
+      case $answer in
+        [Yy]* ) break;;
+        [Nn]* ) exit 1;;
+        * ) echo "Please answer yes or no.";;
+      esac
+    done
+  fi
+  ## -- create release note as excerpt from CHANGELOG.md
+  # determine beginning and end in CHANGELOG.md 
+  TOP=$(grep -n "Version \[$VERSION_NUM\]" CHANGELOG.md | cut -d: -f1)
+  awk "NR>$TOP" CHANGELOG.md > release-note-tmp.md
+  BOTTOM=$(grep -n -m 1 "## Version" release-note-tmp.md | cut -d: -f1)
+  BOTTOM=$(( $TOP + $BOTTOM ))
+  BOTTOM=$(( $BOTTOM - 2 ))
+  TOP=$(( $TOP + 1 ))
+  # extract the excerpt
+  awk "NR>$TOP&&NR<$BOTTOM" CHANGELOG.md > release-note-$VERSION_STR.md
+  sedi "s/###/##/g" release-note-$VERSION_STR.md
+
+
+  ## -- cleanup
+  # remove TMP-file
+  rm release-note-tmp.md
+}
+
+check_sudo() {
+  # checks if sudo is available
+  rootrun=""
+  # If we are root, we do note require sudo
+  if [ "$EUID"  = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "you are root"
+    fi
+    return 0
+  fi
+
+  if sudo -v >/dev/null 2>&1; then
+    if [ $VERBOSE = 1 ]; then
+      echo "sudo ok"
+    fi
+    rootrun="sudo"
+  else
+    echo "sudo failed"
+    # Check if user is root (might be unnecessary)
+    if ! [ $(id -u) = 0 ]; then
+      echo "This script must be run as root" 1>&2
+      exit 1
+    fi
+  fi
+}
+
+check_texlive() {
+  # check for kpsewhich (and mktexlsr)
+  STATUS=0
+  command -v kpsewhich >/dev/null 2>&1 || STATUS=1
+  command -v mktexlsr  >/dev/null 2>&1 || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "kpsewhich and mktexlsr found"
+    fi
+    TEXMFLOCAL=$(kpsewhich --var-value TEXMFLOCAL)
+    return 0
+  fi
+  
+  echo "Program 'kpsewhich' not found."
+  echo "Be sure to use texlive or mactex!"
+  exit 1
+}
+
+check_pdflatex() {
+  # check for pdflatex
+  STATUS=0
+  command -v pdflatex >/dev/null 2>&1 || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "pdflatex found"
+    fi
+    return 0
+  fi
+  
+  echo "Program 'pdflatex' not found."
+  echo "Be sure to have texlive or mactex installed!"
+  exit 1
+}
+
+check_trackschematic() {
+  # check for tikz-trackschematic
+  STATUS=0
+  TEXMFLOCAL=$(kpsewhich --var-value TEXMFLOCAL)
+  DEVDIR="tex/latex/local/tikz-trackschematic-dev"
+
+  ls $TEXMFLOCAL/$DEVDIR/tikz-trackschematic-dev.sty >> /dev/null 2>&1 || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "tikz-trackschematic-dev found"
+    fi
+    return 0
+  fi
+  
+  echo "Library 'tikz-trackschematic-dev' not found."
+  echo "Be sure to have tikz-trackschematic-dev installed!"
+  exit 1
+}
+
+check_imagemagick() {
+  # check for ImageMagick/compare
+  STATUS=0
+  command -v compare >/dev/null 2>&1 || STATUS=1
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "compare found"
+    fi
+    return 0
+  fi
+  
+  echo "Program 'compare' not found."
+  echo "Be sure to have ImageMagick installed!"
+  exit 1
+}
+
+run_test_cases() {
+
+  cd test/
+  TESTDIR="../test"
+
+  mkdir -p .tex
+  STATUS=0
+
+  # Start with an empty List:
+  FAILED=""
+
+  if [ $VERBOSE = 1 ]; then
+    echo "==========="
+    echo "Comparison of the expected appearance with the freshly created."
+    echo "-----------"
+  fi
+
+  for TEST in `ls $TESTDIR/*.tex`; do
+    # setup
+    FILE=$(basename "$TEST") # remove path
+    NAME=${FILE%.*} # remove extension
+    ADD_TO_LIST=0
+    #
+    if [ $VERBOSE = 1 ]; then
+      echo "$NAME test:"
+    fi
+    #
+    #
+    ## TeX build
+    #
+    exit_code_pdflatex=0
+    pdflatex -output-directory=.tex -interaction=batchmode -halt-on-error ${NAME}.tex >> /dev/null 2>&1 || exit_code_pdflatex=1
+    # understanding TeX statistics:
+    #   -> https://tex.stackexchange.com/questions/26208/components-of-latexs-memory-usage
+    # TOP=$(grep -n "Here is how much of TeX's memory you used:" .tex/${NAME}.log | cut -d: -f1)
+    # BOTTOM=$(($(grep -n "stack positions out of" .tex/${NAME}.log | cut -d: -f1) + 1))
+    # awk "NR>$TOP&&NR<$BOTTOM" .tex/${NAME}.log  > .tex/${NAME}.statistics.log
+    memory_usage=$(grep "words of memory out of" .tex/${NAME}.log | cut -d " " -f2)
+    memory_usage=$(($memory_usage/1000))
+    if [ $exit_code_pdflatex = 0 ]; then
+      if [ $VERBOSE = 1 ]; then
+        echo $n " - ${GREEN}build succesful${COLOR_RESET}: $c"
+        echo "${memory_usage}k of memory used."
+        # cat .tex/${NAME}.statistics.log
+      fi
+    else
+      STATUS=1
+      ADD_TO_LIST=1
+      if [ $VERBOSE = 1 ]; then
+        echo " - ${RED}build failed${COLOR_RESET}."
+      fi
+    fi
+    #
+    #
+    ## compare images with following compare metrics
+    # AE:    absolute error count, number of different pixels (-fuzz affected)
+    # DSSIM: structural dissimilarity index
+    # FUZZ:  mean color distance
+    # MAE:   mean absolute error (normalized), average channel error distance
+    # MEPP:  mean error per pixel (normalized mean error, normalized peak error)
+    # MSE:   mean error squared, average of the channel error squared
+    # NCC:   normalized cross correlation
+    # PAE:   peak absolute (normalized peak absolute)
+    # PHASH: perceptual hash for the sRGB and HCLp colorspaces.
+    # PSNR:  peak signal to noise ratio
+    # RMSE:  root mean squared (normalized root mean squared)
+    # SSIM:  structural similarity index
+    #
+    EXIT_CODE=0
+    compare -metric RMSE -colorspace RGB .tex/${NAME}.pdf ${NAME}_expected.pdf NULL: >> /dev/null 2>&1 || EXIT_CODE=1
+    if [ $EXIT_CODE = 0 ]; then
+      if [ $VERBOSE = 1 ]; then
+        echo " - ${GREEN}comparison succesful${COLOR_RESET}."
+      fi
+    else
+      STATUS=1
+      ADD_TO_LIST=1
+      if [ $VERBOSE = 1 ]; then
+        echo " - ${RED}comparison failed${COLOR_RESET}."
+      fi
+    fi
+    ## if a test failed add to list
+    if [ $ADD_TO_LIST = 1 ]; then
+      if [ -z "$FAILED" ]; then
+        # first item
+        FAILED="$NAME"
+      else
+        FAILED="$FAILED, $NAME"
+      fi
+    fi
+  done
+
+  if [ $STATUS = 0 ]; then
+    if [ $VERBOSE = 1 ]; then
+      echo "-----------"
+      echo "${GREEN}All tests passed!${COLOR_RESET}"
+    fi
+    exit 0
+  else
+    if [ $VERBOSE = 1 ]; then
+      echo "-----------"
+      echo "${RED}The following tests failed: ${FAILED}!${COLOR_RESET}"
+    else
+      echo "${RED}Some or all tests failed!${COLOR_RESET}"
+    fi
+    exit 1
+  fi
+}
+
+link_dev_files() {
+  # destination folder inside the TeX Live installation
+  DEVDIR="tex/latex/local/tikz-trackschematic-dev"
+  PROJECTDIR=$(pwd -P)
+  if [ $BATCHMODE = 0 ]; then
+    echo ""
+    echo "Do you wish to link this package from"
+    echo "$PROJECTDIR/src to"
+    echo "$TEXMFLOCAL/$DEVDIR?"
+    echo $n "(y/n) $c"
+    while true; do
+      read -p "" answer
+      case $answer in
+        [Yy]* ) break;;
+        [Nn]* ) exit 1;;
+        * ) echo "Please answer yes or no.";;
+      esac
+    done
+  fi
+
+  # make sure that destination folder exists
+  if [ ! -d "$TEXMFLOCAL/$DEVDIR" ]; then
+    $rootrun mkdir -p $TEXMFLOCAL/$DEVDIR
+  fi
+
+  # link every file in src/ and rename it
+  for SRC in src/*; do
+    FILE=$(basename "$SRC") # remove path
+    NAME=${FILE%.*} # remove extension
+    PREFIX=${NAME%%.*}
+    POSTFIX=${NAME#*.}
+    EXT=${SRC##*.}
+
+    if [ "$PREFIX" = "$POSTFIX" ]; then
+      DST="$PREFIX-dev.$EXT"
+    else
+      DST="$PREFIX-dev.$POSTFIX.$EXT"
+    fi
+
+    $rootrun ln -sfn $PROJECTDIR/$SRC $TEXMFLOCAL/$DEVDIR/$DST
+
+    if [ $VERBOSE = 1 ]; then
+      echo "linked '$DST'"
+    fi
+  done
+
+  # update TeX Live installation
+  TEXlsr=`which mktexlsr`
+  if [ $VERBOSE = 1 ]; then
+    $rootrun $TEXlsr
+  else
+    $rootrun $TEXlsr --quiet
+  fi
+}
+
+## -- execution
+## Process user arguments
+process_arguments $@
+
+## do what is requested
+if [ $INSTALL = 1 ]; then
+  ##
+  check_path
+  check_texlive
+  check_sudo
+
+  ##
+  link_dev_files
+
+fi
+
+if [ $TESTING = 1 ]; then
+  ##
+  check_path
+  check_pdflatex
+  check_trackschematic
+  check_imagemagick
+  if [ ! -d $TESTDIR ]; then
+    echo "${RED}Did not find test directory!${COLOR_RESET}"
+    exit 1
+  fi
+
+  ##
+  run_test_cases
+
+fi
+
+if [ $RELEASE = 1 ]; then
+  ####
+  # This script produces a .zip-file in accordance to the requirements for CTAN.
+  # For more information see https://ctan.org/help/upload-pkg.
+  ####
+
+  ## check if version ist in the correct format
+  check_version_number
+  RELEASE="tikz-trackschematic-$VERSION_STR"
+
+  ## check if $VERSION is present in README.md and versionhistory.tex
+  check_versionhistory
+  check_changelog
+  check_url1
+  check_url2
+  check_date
+
+  ## check for installed software
+  check_zip
+
+  ##
+  create_release
+  create_release_notes
+fi
+
+#EOF
\ No newline at end of file
diff --git a/create-release.sh b/create-release.sh
deleted file mode 100755
index 6e5e1ef..0000000
--- a/create-release.sh
+++ /dev/null
@@ -1,266 +0,0 @@
-#!/usr/bin/env sh
-
-# Copyright (c) 2018 - 2022, Martin Scheidt (ISC license)
-# Permission to use, copy, modify, and/or distribute this file for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
-
-####
-# This script produces a .zip-file in accordance to the requirements for CTAN.
-# For more information see https://ctan.org/help/upload-pkg.
-####
-
-# Halt on error
-set -e
-
-## -- pass getopts
-
-usage() { echo "Usage: create-release.sh [-v version]"; }
-
-verbose=1
-batch_mode=0
-
-while getopts ":v" opt; do
-  case ${opt} in
-    v ) batch_mode=1
-        verbose=0
-      ;;
-    \? ) usage
-         exit 1
-      ;;
-  esac
-done
-
-## -- cross platform helpers
-
-if [ "`echo -n`" = "-n" ]; then
-  n=""
-  c="\c"
-else
-  n="-n"
-  c=""
-fi
-
-# https://stackoverflow.com/questions/2320564/sed-i-command-for-in-place-editing-to-work-with-both-gnu-sed-and-bsd-osx
-sedi () {
-    sed --version >/dev/null 2>&1 && sed -i -- "$@" || sed -i "" "$@"
-}
-
-## -- get input
-
-if [ "$batch_mode" = 0 ]; then
-  echo $n "specify version ( e.g. v0.6 ): $c"
-  read VERSION_STR
-else
-  VERSION_STR=$2
-fi
-# remove leading character "v"
-VERSION_NUM=$(echo $VERSION_STR | cut -c 2-)
-
-RELEASE="tikz-trackschematic-$VERSION_STR"
-
-## -- commands
-
-# check for zip
-check_zip() {
-  status=0
-  command -v zip >/dev/null 2>&1 || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "zip found"
-    fi
-    return 0
-  fi
-  
-  echo "Program 'zip' not found."
-  echo "Be sure to have zip installed!"
-  exit 1
-}
-
-check_versionhistory() {
-  # check if $VERSION is present in doc/versionhistory.tex
-  status=0
-  grep -qs "vhEntry{$VERSION_NUM" doc/versionhistory.tex || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "Version $VERSION_NUM is present in versionhistory.tex."
-    fi
-    return 0
-  fi
-  
-  echo "Version $VERSION_NUM not found in versionhistory.tex."
-  echo "Be sure to edit versionhistory.tex and specify current version!"
-  exit 1
-}
-
-check_changelog() {
-  # check if $VERSION is present in CHANGELOG.md
-  status=0
-  grep -qs "Version \[$VERSION_NUM\]" CHANGELOG.md || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "Version $VERSION_NUM is present in CHANGELOG.md."
-    fi
-    return 0
-  fi
-  
-  echo "Version $VERSION_NUM not found in CHANGELOG.md."
-  echo "Be sure to edit CHANGELOG.md and specify current version!"
-  exit 1
-}
-
-check_date() {
-  ## extract DATE from versionhistory.tex and CHANGELOG.md
-  LINE_1=$(grep "vhEntry{$VERSION_NUM" doc/versionhistory.tex)
-  LINE_2=$(grep "Version \[$VERSION_NUM\]" CHANGELOG.md)
-  DATEISO_1=$(echo $LINE_1 | egrep -o '[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])')
-  DATEISO_2=$(echo $LINE_2 | egrep -o '[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])')
-
-  if [ $DATEISO_1 = $DATEISO_2 ]; then
-    # DATE=$(date "+%Y-%m-%d")
-    DATE="$DATEISO_1" 
-    if [ $verbose = 1 ]; then
-      echo "The date $DATE was extracted from versionhistory.tex and CHANGELOG.md."
-    fi
-    return 0
-  fi
-  
-  echo "The date in versionhistory.tex and CHANGELOG.md did not match."
-  echo "Be sure to edit versionhistory.tex or CHANGELOG.md and modifiy the date!"
-  exit 1
-}
-
-check_url1() {
-  ## extract urls from CHANGELOG.md
-  status=0
-  LINE=$(grep "\[$VERSION_NUM\]: https://" CHANGELOG.md)
-  echo $LINE | grep -qs "...$VERSION_STR"  || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "Version $VERSION_NUM URL is present in CHANGELOG.md."
-    fi
-    return 0
-  fi
-  
-  echo "Version $VERSION_NUM URL was not found in CHANGELOG.md."
-  echo "Be sure to edit CHANGELOG.md and specify a URL for the current version!"
-  exit 1
-}
-
-check_url2() {
-  ## extract urls from CHANGELOG.md
-  status=0
-  LINE=$(grep "\[Unreleased\]: https://" CHANGELOG.md)
-  echo $LINE | grep -qs "/$VERSION_STR..."  || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "The URL for [Unreleased] was also updated in CHANGELOG.md! Thx!"
-    fi
-    return 0
-  fi
-  
-  echo "WARNING: URL for [Unreleased] in CHANGELOG.md does not reflect the current version $VERSION_NUM."
-  echo "WARNING: Be sure to edit CHANGELOG.md and specify current version!"
-
-  if [ "$batch_mode" -eq 0 ]; then
-    echo "Do you wish to continue without updated URL for [Unreleased]?"
-    echo $n "(y/n) $c"
-    while true; do
-      read -p "" answer
-      case $answer in
-        [Yy]* ) break;;
-        [Nn]* ) exit 1;;
-        * ) echo "Please answer yes or no.";;
-      esac
-    done
-  else
-    echo "ERROR: Aborting in batch mode!"
-    exit 1
-  fi
-}
-
-## -- creating the release
-
-## check for installed software
-check_zip
-
-## check if $VERSION is present in README.md and versionhistory.tex
-check_versionhistory
-check_changelog
-check_date
-check_url1
-check_url2
-
-## create backup-file und update VERSIONDATE in tikz-trackschematic.sty
-sed -i".backup" -e"s/%\[VERSIONDATE/\[$DATE $VERSION_STR/g" src/tikz-trackschematic.sty
-sedi "/%%\[SCRIPT\]/d" src/tikz-trackschematic.sty
-if [ $verbose = 1 ]; then
-  echo "Updated version in src/tikz-trackschematic.sty"
-fi
-
-## -- (OPTIONAL) recompile manual.tex, examples, symboly_table and snippets.tex` 
-
-
-## -- create zip-archive
-# create temporary folder
-TMP=$RELEASE
-mkdir -p $TMP
-
-# copy README and .sty-file
-cp README.md $TMP/README.md
-cp doc/tikz-trackschematic-documentation.sty  $TMP/
-
-# copy and rename documentation
-cp doc/manual.pdf  $TMP/tikz-trackschematic.pdf
-cp doc/manual.tex  $TMP/tikz-trackschematic.tex
-cp doc/snippets.pdf  $TMP/tikz-trackschematic-snippets.pdf
-cp doc/snippets.tex  $TMP/tikz-trackschematic-snippets.tex
-cp doc/symbology-table.pdf  $TMP/tikz-trackschematic-symbology-table.pdf
-cp doc/symbology-table.tex  $TMP/tikz-trackschematic-symbology-table.tex
-mkdir $TMP/tikz-trackschematic-examples
-mkdir $TMP/tikz-trackschematic-snippets
-cp -R doc/examples/*  $TMP/tikz-trackschematic-examples/
-cp -R doc/snippets/*  $TMP/tikz-trackschematic-snippets/
-if [ $verbose = 1 ]; then
-  echo "copied documentation"
-fi
-
-# copy src-files
-for SRC in src/*; do
-  EXT=${SRC##*.}
-  # do not copy backup created by sed
-  if [ $EXT != "backup" ]; then
-    cp $SRC $TMP/
-  fi
-done
-if [ $verbose = 1 ]; then
-  echo "copied src-files"
-fi
-
-# zip package
-zip -r $RELEASE.zip $TMP/*
-if [ $verbose = 1 ]; then
-  echo "compressed the release in $RELEASE.zip"
-fi
-
-
-## -- create release note as excerpt from CHANGELOG.md
-# determine beginning and end in CHANGELOG.md 
-TOP=$(grep -n "Version \[$VERSION_NUM\]" CHANGELOG.md | cut -d: -f1)
-awk "NR>$TOP" CHANGELOG.md > release-note-tmp.md
-BOTTOM=$(grep -n -m 1 "## Version" release-note-tmp.md | cut -d: -f1)
-BOTTOM=$(( $TOP + $BOTTOM ))
-BOTTOM=$(( $BOTTOM - 2 ))
-TOP=$(( $TOP + 1 ))
-# extract the excerpt
-awk "NR>$TOP&&NR<$BOTTOM" CHANGELOG.md > release-note-$VERSION_STR.md
-sedi "s/###/##/g" release-note-$VERSION_STR.md
-
-
-## -- cleanup
-# remove TMP-folder
-rm -rf $TMP
-# undo changes to tikz-trackschematic.sty by sed
-mv src/tikz-trackschematic.sty.backup src/tikz-trackschematic.sty
-rm release-note-tmp.md
-if [ $verbose = 1 ]; then
-  echo "clean up done!"
-fi
\ No newline at end of file
diff --git a/dev-install.sh b/dev-install.sh
deleted file mode 100755
index 10f68cd..0000000
--- a/dev-install.sh
+++ /dev/null
@@ -1,145 +0,0 @@
-#!/usr/bin/env sh
-
-# Copyright (c) 2018 - 2022, Martin Scheidt (ISC license)
-# Permission to use, copy, modify, and/or distribute this file for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
-
-# Halt on error
-set -e
-
-## -- pass getopts
-
-usage() { echo "Usage: dev-install.sh [-q] [-b]"; }
-
-verbose=1
-batch_mode=0
-
-while getopts ":qb" opt; do
-  case ${opt} in
-    q ) verbose=0
-      ;;
-    b ) batch_mode=1
-        # verbose=0
-      ;;
-    \? ) usage
-         exit 1
-      ;;
-  esac
-done
-
-## -- variables
-
-# destination folder inside the TeX Live installation
-DEVDIR="tex/latex/local/tikz-trackschematic-dev"
-
-## -- commands
-
-# check for kpsewhich (and mktexlsr)
-check_texlive() {
-  status=0
-  command -v kpsewhich >/dev/null 2>&1 || status=1
-  command -v mktexlsr  >/dev/null 2>&1 || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "kpsewhich and mktexlsr found"
-    fi
-    return 0
-  fi
-  
-  echo "Program 'kpsewhich' not found."
-  echo "Be sure to use texlive or mactex!"
-  exit 1
-}
-
-# checks if sudo is available
-check_sudo() {
-  rootrun=""
-  # If we are root, we do note require sudo
-  if [ "$EUID"  = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "you are root"
-    fi
-    return 0
-  fi
-
-  if sudo -v >/dev/null 2>&1; then
-    if [ $verbose = 1 ]; then
-      echo "sudo ok"
-    fi
-    rootrun="sudo"
-  else
-    echo "sudo failed"
-    # Check if user is root (might be unnecessary)
-    if ! [ $(id -u) = 0 ]; then
-      echo "This script must be run as root" 1>&2
-      exit 1
-    fi
-  fi
-}
-
-## -- checking system
-
-check_texlive
-check_sudo
-
-TEXMFLOCAL=$(kpsewhich --var-value TEXMFLOCAL)
-PROJECTDIR=$(pwd -P)
-
-if [ "`echo -n`" = "-n" ]; then
-  n=""
-  c="\c"
-else
-  n="-n"
-  c=""
-fi
-
-if [ "$batch_mode" -eq 0 ]; then
-  echo ""
-  echo "Do you wish to link this package from"
-  echo "$PROJECTDIR/src to"
-  echo "$TEXMFLOCAL/$DEVDIR?"
-  echo $n "(y/n) $c"
-  while true; do
-    read -p "" answer
-    case $answer in
-      [Yy]* ) break;;
-      [Nn]* ) exit 1;;
-      * ) echo "Please answer yes or no.";;
-    esac
-  done
-fi
-
-## -- copying files
-
-# make sure that destination folder exists
-if [ ! -d "$TEXMFLOCAL/$DEVDIR" ]; then
-  $rootrun mkdir -p $TEXMFLOCAL/$DEVDIR
-fi
-
-# copy every file in src/ and rename it
-for SRC in src/*; do
-  FILE=$(basename "$SRC") # remove path
-  NAME=${FILE%.*} # remove extension
-  PREFIX=${NAME%%.*}
-  POSTFIX=${NAME#*.}
-  EXT=${SRC##*.}
-
-  if [ "$PREFIX" = "$POSTFIX" ]; then
-    DST="$PREFIX-dev.$EXT"
-  else
-    DST="$PREFIX-dev.$POSTFIX.$EXT"
-  fi
-
-  $rootrun ln -sfn $PROJECTDIR/$SRC $TEXMFLOCAL/$DEVDIR/$DST
-
-  if [ $verbose = 1 ]; then
-    echo "linked '$DST'"
-  fi
-done
-
-# update TeX Live installation
-TEXlsr=`which mktexlsr`
-if [ $verbose = 1 ]; then
-  $rootrun $TEXlsr
-else
-  $rootrun $TEXlsr --quiet
-fi
diff --git a/test/testing.sh b/test/testing.sh
deleted file mode 100755
index 3883ca3..0000000
--- a/test/testing.sh
+++ /dev/null
@@ -1,217 +0,0 @@
-#!/usr/bin/env sh
-
-# Copyright (c) 2018 - 2022, Martin Scheidt (ISC license)
-# Permission to use, copy, modify, and/or distribute this file for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
-
-# Halt on error
-set -e
-
-## -- pass getopts
-
-usage() { echo "Usage: testing.sh [-q]"; }
-
-verbose=1
-
-while getopts ":q" opt; do
-  case ${opt} in
-    q ) verbose=0
-      ;;
-    \? ) usage
-         exit 1
-      ;;
-  esac
-done
-
-## -- variables
-# colors
-Red="\033[0;31m"
-Green="\033[0;32m"
-Reset="\033[0;m"
-# directory
-TESTDIR="../test"
-if [ -d ../tikz-trackschematic ]; then
-  cd test/
-fi
-
-## -- commands
-
-check_tex_distro() {
-  # check for latexmk
-  status=0
-  command -v pdflatex >/dev/null 2>&1 || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "pdflatex found"
-    fi
-    return 0
-  fi
-  
-  echo "Program 'pdflatex' not found."
-  echo "Be sure to have texlive or mactex installed!"
-  exit 1
-}
-
-check_trackschematic() {
-  # check for tikz-trackschematic
-  status=0
-  TEXMFLOCAL=$(kpsewhich --var-value TEXMFLOCAL)
-  DEVDIR="tex/latex/local/tikz-trackschematic-dev"
-
-  ls $TEXMFLOCAL/$DEVDIR/tikz-trackschematic-dev.sty >> /dev/null 2>&1 || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "tikz-trackschematic-dev found"
-    fi
-    return 0
-  fi
-  
-  echo "Library 'tikz-trackschematic-dev' not found."
-  echo "Be sure to have tikz-trackschematic-dev installed!"
-  exit 1
-}
-
-check_imagemagick() {
-  # check for ImageMagick/compare
-  status=0
-  command -v compare >/dev/null 2>&1 || status=1
-  if [ $status = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo "compare found"
-    fi
-    return 0
-  fi
-  
-  echo "Program 'compare' not found."
-  echo "Be sure to have ImageMagick installed!"
-  exit 1
-}
-
-## -- checking system
-
-check_tex_distro
-check_trackschematic
-check_imagemagick
-if [ ! -d $TESTDIR ]; then
-  echo "${Red}Do not find test directory!${Reset}"
-  exit 1
-fi
-
-if [ "`echo -n`" = "-n" ]; then
-  n=""
-  c="\c"
-else
-  n="-n"
-  c=""
-fi
-
-## -- Testing
-
-mkdir -p .tex
-test_status=0
-# Start with an empty List:
-FAILED=""
-
-if [ $verbose = 1 ]; then
-  echo "==========="
-  echo "Comparison of the expected appearance with the freshly created."
-  echo "-----------"
-fi
-
-for TEST in `ls $TESTDIR/*.tex`; do
-  # setup
-  FILE=$(basename "$TEST") # remove path
-  NAME=${FILE%.*} # remove extension
-  add_to_list=0
-  #
-  if [ $verbose = 1 ]; then
-    echo "$NAME test:"
-  fi
-  #
-  #
-  ## TeX build
-  #
-  exit_code_pdflatex=0
-  pdflatex -output-directory=.tex -interaction=batchmode -halt-on-error ${NAME}.tex >> /dev/null 2>&1 || exit_code_pdflatex=1
-  # understanding TeX statistics:
-  #   -> https://tex.stackexchange.com/questions/26208/components-of-latexs-memory-usage
-  # TOP=$(grep -n "Here is how much of TeX's memory you used:" .tex/${NAME}.log | cut -d: -f1)
-  # BOTTOM=$(($(grep -n "stack positions out of" .tex/${NAME}.log | cut -d: -f1) + 1))
-  # awk "NR>$TOP&&NR<$BOTTOM" .tex/${NAME}.log  > .tex/${NAME}.statistics.log
-  memory_usage=$(grep "words of memory out of" .tex/${NAME}.log | cut -d " " -f2)
-  memory_usage=$(($memory_usage/1000))
-  if [ $exit_code_pdflatex = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo $n " - ${Green}build succesful${Reset}: $c"
-      echo "${memory_usage}k of memory used."
-      # cat .tex/${NAME}.statistics.log
-    fi
-  else
-    test_status=1
-    add_to_list=1
-    if [ $verbose = 1 ]; then
-      echo " - ${Red}build failed${Reset}."
-    fi
-  fi
-  #
-  #
-  ## compare images
-  #
-  # compare metrics
-  # AE:    absolute error count, number of different pixels (-fuzz affected)
-  # DSSIM: structural dissimilarity index
-  # FUZZ:  mean color distance
-  # MAE:   mean absolute error (normalized), average channel error distance
-  # MEPP:  mean error per pixel (normalized mean error, normalized peak error)
-  # MSE:   mean error squared, average of the channel error squared
-  # NCC:   normalized cross correlation
-  # PAE:   peak absolute (normalized peak absolute)
-  # PHASH: perceptual hash for the sRGB and HCLp colorspaces.
-  # PSNR:  peak signal to noise ratio
-  # RMSE:  root mean squared (normalized root mean squared)
-  # SSIM:  structural similarity index
-  #
-  exit_code_compare=0
-  compare -metric RMSE -colorspace RGB .tex/${NAME}.pdf ${NAME}_expected.pdf NULL: >> /dev/null 2>&1 || exit_code_compare=1
-  if [ $exit_code_compare = 0 ]; then
-    if [ $verbose = 1 ]; then
-      echo " - ${Green}comparison succesful${Reset}."
-    fi
-  else
-    test_status=1
-    add_to_list=1
-    if [ $verbose = 1 ]; then
-      echo " - ${Red}comparison failed${Reset}."
-    fi
-  fi
-  #
-  #
-  ## if a test failed add to list
-  if [ $add_to_list = 1 ]; then
-    if [ -z "$FAILED" ]; then
-      # first item
-      FAILED="$NAME"
-    else
-      FAILED="$FAILED, $NAME"
-    fi
-  fi
-done
-
-## -- finishing
-
-if [ $test_status = 0 ]; then
-  if [ $verbose = 1 ]; then
-    echo "-----------"
-    echo "${Green}All tests passed!${Reset}"
-  fi
-  exit 0
-else
-  if [ $verbose = 1 ]; then
-    echo "-----------"
-    echo "${Red}The following tests failed: ${FAILED}!${Reset}"
-  else
-    echo "${Red}Some or all tests failed!${Reset}"
-  fi
-  exit 1
-fi
-
-EOF
\ No newline at end of file