diff --git a/.github/workflows/moodle-ci.yml b/.github/workflows/moodle-ci.yml
index 46aaace..2a3b6cb 100644
--- a/.github/workflows/moodle-ci.yml
+++ b/.github/workflows/moodle-ci.yml
@@ -11,12 +11,46 @@ on:
       - '**'
 
 jobs:
+  define-matrix:
+    runs-on: ubuntu-latest
+
+    outputs:
+      include_list: ${{ steps.include_list.outputs.include_list }}
+
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Define matrix
+        id: include_list
+        run: |
+          # Generates a json array with include entries for all possible combinations of PHP, Moodle branch and database
+          include_str="["
+          first_entry=true
+          for i in $(cat plugin_compatibility.json | jq -c '.[]'); do
+            moodle=$(echo "$i" | jq -r '.moodle')
+            for php in $(echo "$i" | jq -r '.PHP[]'); do
+              for database in pgsql mariadb; do
+                if [ "$first_entry" = true ]; then
+                  first_entry=false
+                else
+                  include_str="$include_str,"
+                fi
+                next_entry="{\"php\": \"$php\", \"moodle-branch\": \"$moodle\", \"database\": \"$database\", \"experimental\": false}"
+                include_str="$include_str$next_entry"
+              done
+            done
+          done
+          include_str="$include_str]"
+          echo "include_list=$include_str" >> "$GITHUB_OUTPUT"
+
   test:
     runs-on: ubuntu-22.04
+    needs: define-matrix
 
     services:
       postgres:
-        image: postgres:13
+        image: postgres:16
         env:
           POSTGRES_USER: 'postgres'
           POSTGRES_HOST_AUTH_METHOD: 'trust'
@@ -38,15 +72,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['8.1', '8.2', '8.3']
-        moodle-branch: ['MOODLE_404_STABLE', 'MOODLE_405_STABLE']
+        php: ['8.3']
+        moodle-branch: ['main']
         database: [pgsql, mariadb]
-        experimental: [false]
-        include:
-          - php: '8.3'
-            moodle-branch: 'main'
-            database: mariadb
-            experimental: true
+        experimental: [true]
+        include: ${{ fromJSON(needs.define-matrix.outputs.include_list) }}
 
     continue-on-error: ${{ matrix.experimental }}
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 656156a..fb012c1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,4 +1,4 @@
-name: Moodle Plugin CI
+name: Create release
 
 on:
   release:
@@ -24,45 +24,46 @@ jobs:
           # - release is marked as pre-release on github, then MATURITY_BETA
           # - release name contains 'rc', then MATURITY_RC
           if [[ "${{ github.ref_name }}" == *"rc"* ]]; then
-            sed -i "s/^\$plugin->maturity\s=\sMATURITY_STABLE;/\$plugin->maturity = MATURITY_RC;/" version.php
+            sed -i "s/^\$plugin->maturity\s=\sMATURITY_[A-Z]*;/\$plugin->maturity = MATURITY_RC;/" version.php
           elif [[ "${{ github.event_name }}" == "release" && "${{ github.event.release.prerelease }}" == "true" ]]; then
-            sed -i "s/^\$plugin->maturity\s=\sMATURITY_STABLE;/\$plugin->maturity = MATURITY_BETA;/" version.php
-          else 
-            sed -i "s/^\$plugin->maturity\s=\sMATURITY_STABLE;/\$plugin->maturity = MATURITY_STABLE;/" version.php
+            sed -i "s/^\$plugin->maturity\s=\sMATURITY_[A-Z]*;/\$plugin->maturity = MATURITY_BETA;/" version.php
+          else
+            sed -i "s/^\$plugin->maturity\s=\sMATURITY_[A-Z]*;/\$plugin->maturity = MATURITY_STABLE;/" version.php
           fi
 
       - name: remove files not needed for release
         run: |
-          rm -rf .github tests vendor .gitignore composer.json composer.lock phpunit.xml dev_utils
+          rm -rf .github tests vendor .gitignore composer.json composer.lock phpunit.xml dev_utils phpunit.xml infection.json5
 
-      - name: Create release archives
+      - name: Create release archive
         run: |
-          tar --exclude='.git' -czf /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.tgz *
-          zip -x .git -r /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip *
+          FOLDER_NAME=$(echo ${{ env.PLUGIN_NAME }} | cut -d'_' -f2)
+          mkdir -p /tmp/$FOLDER_NAME
+          cp -r * /tmp/$FOLDER_NAME
+          cd /tmp
+          zip -r moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip $FOLDER_NAME
 
-      - name: Upload release archives
+      - name: Calculate MD5 hash
+        run: |
+          cd /tmp
+          md5sum /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip > /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip.md5
+
+      - name: Upload release archive (ZIP)
         uses: svenstaro/upload-release-action@v2
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
           file: /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip
           tag: ${{ github.ref_name }}
-      - name: Upload release archives
+      - name: Upload MD5 hash files (ZIP)
         uses: svenstaro/upload-release-action@v2
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.tgz
+          file: /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip.md5
           tag: ${{ github.ref_name }}
 
-      - name: Prepare release body (description)
-        id: prep_body
+      - name: Upload to package registry
         run: |
-          echo "${{ github.event.release.body }}" > changes.md
-
-      - name: Discord notification
-        uses: appleboy/discord-action@master
-        with:
-          webhook_id: ${{ secrets.DISCORD_RELEASE_CHANNEL_WEBHOOK_ID }}
-          webhook_token: ${{ secrets.DISCORD_RELEASE_CHANNEL_WEBHOOK_TOKEN }}
-          username: GitHub Releases
-          message: "New release of **${{ github.repository }}**\nVersion: ${{ github.ref_name }} (${{github.event.release.name}})\n<${{ github.event.release.html_url }}>"
-          file: changes.md
\ No newline at end of file
+          cd /tmp
+          MD5_CONTENT=$(awk '{print $1 " '${{ github.ref_name }}.zip'"}' /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip.md5)
+          curl --fail-with-body -u upload:${{ secrets.PACKAGE_REGISTRY_UPLOAD_PASSWORD }} -T /tmp/moodle-${{ env.PLUGIN_NAME }}-${{ github.ref_name }}.zip https://packages.projekt-adler.eu/upload/moodle/${{ env.PLUGIN_NAME }}/${{ github.ref_name }}.zip
+          curl --fail-with-body -u upload:${{ secrets.PACKAGE_REGISTRY_UPLOAD_PASSWORD }} -X PUT --data "$MD5_CONTENT" https://packages.projekt-adler.eu/upload/moodle/${{ env.PLUGIN_NAME }}/${{ github.ref_name }}.zip.md5
diff --git a/README.md b/README.md
index 1947319..c63449b 100644
--- a/README.md
+++ b/README.md
@@ -5,16 +5,9 @@
 Das Local Logging Plugin ermöglicht eine einfache Protokollierung von Ereignissen in Moodle. Es stellt eine Logger-Klasse zur Verfügung, die es Entwicklern ermöglicht, Nachrichten verschiedener Schweregrade zu protokollieren.
 
 ## Kompabilität
+Folgende Versionen werden unterstützt (mit mariadb und postresql getestet):
 
-| Moodle Branch           | PHP Version |
-|-------------------------|-------------|
-| MOODLE_404_STABLE       | 8.1         |
-| MOODLE_404_STABLE       | 8.2         |
-| MOODLE_404_STABLE       | 8.3         |
-| MOODLE_405_STABLE (LTS) | 8.1         |
-| MOODLE_405_STABLE (LTS) | 8.2         |
-| MOODLE_405_STABLE (LTS) | 8.3         |
-
+siehe [plugin_compatibility.json](plugin_compatibility.json)
 
 ## Funktionsweise
 
diff --git a/classes/hook_listener.php b/classes/hook_listener.php
index f7ad380..ee81131 100644
--- a/classes/hook_listener.php
+++ b/classes/hook_listener.php
@@ -2,9 +2,11 @@
 
 namespace local_logging;
 
+use core\di;
 use core\hook\di_configuration;
 use local_logging\local\output\log_output;
 use local_logging\local\output\log_output_db;
+use local_logging\local\output\log_output_mtrace;
 use local_logging\local\output\log_output_stdout;
 
 class hook_listener {
@@ -12,11 +14,13 @@ public static function inject_dependencies(di_configuration $hook): void {
         $hook->add_definition(
             id: log_output::class,
             definition: function (): log_output {
-                if (defined('CLI_SCRIPT') || defined('PHPUNIT_TEST')) {
-                    return new log_output_stdout();
-                } else {
-                    return new log_output_db();
-                }
+                return di::get(log_output_mtrace::class);
+//                if (defined('CLI_SCRIPT') || defined('PHPUNIT_TEST')) {
+//                    return new log_output_stdout();
+//                    return di::get(log_output_mtrace::class);
+//                } else {
+//                    return di::get(log_output_db::class);
+//                }
             }
         );
     }
diff --git a/classes/local/output/log_output_mtrace.php b/classes/local/output/log_output_mtrace.php
new file mode 100644
index 0000000..64282e8
--- /dev/null
+++ b/classes/local/output/log_output_mtrace.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace local_logging\local\output;
+
+use local_logging\local\util;
+
+class log_output_mtrace implements log_output {
+    public function output(string $message, int $level, string $component, string $title, int $time, ?int $user_id): void {
+        mtrace(
+            '[' . date('Y-m-d H:i:s', $time) . '] ' . util::convertLogLevelToString($level) . ' ' . $component . ' - ' . $title . ': ' . $message . PHP_EOL,
+        );
+    }
+}
\ No newline at end of file
diff --git a/infection.json5 b/infection.json5
new file mode 100644
index 0000000..92aad9b
--- /dev/null
+++ b/infection.json5
@@ -0,0 +1,17 @@
+{
+  "$schema": "https://raw.githubusercontent.com/infection/infection/0.29.0/resources/schema.json",
+  "source": {
+    "directories": [
+      "."
+    ]
+  },
+  "phpUnit": {
+    "configDir": ".",
+    "customPath": "./vendor/phpunit/phpunit/phpunit"
+  },
+  "initialTestsPhpOptions": "-dxdebug.mode=off -dpcov.enabled=1 -dpcov.directory=.",
+  "bootstrap": "vendor/autoloadmoodle.php",
+  "mutators": {
+    "@default": true,
+  }
+}
\ No newline at end of file
diff --git a/plugin_compatibility.json b/plugin_compatibility.json
new file mode 100644
index 0000000..5feec3a
--- /dev/null
+++ b/plugin_compatibility.json
@@ -0,0 +1,18 @@
+[
+  {
+    "moodle": "MOODLE_404_STABLE",
+    "PHP": [
+      "8.1",
+      "8.2",
+      "8.3"
+    ]
+  },
+  {
+    "moodle": "MOODLE_405_STABLE",
+    "PHP": [
+      "8.1",
+      "8.2",
+      "8.3"
+    ]
+  }
+]
\ No newline at end of file
diff --git a/tests/local/output/log_output_db_test.php b/tests/local/output/log_output_db_test.php
index 1b39490..8f349d8 100644
--- a/tests/local/output/log_output_db_test.php
+++ b/tests/local/output/log_output_db_test.php
@@ -1,8 +1,9 @@
 <?php
 
+namespace local_logging\local\output;
+
 use core\di;
 use local_logging\lib\adler_testcase;
-use local_logging\local\output\log_output_db;
 
 defined('MOODLE_INTERNAL') || die();
 
diff --git a/tests/local/output/log_output_mtrace_test.php b/tests/local/output/log_output_mtrace_test.php
new file mode 100644
index 0000000..5958ded
--- /dev/null
+++ b/tests/local/output/log_output_mtrace_test.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace local_logging\local\output;
+
+use local_logging\lib\adler_testcase;
+use local_logging\local\util;
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+require_once($CFG->dirroot . '/local/logging/tests/lib/adler_testcase.php');
+
+class log_output_mtrace_test extends adler_testcase {
+    public function test_output() {
+        // Create an instance of log_output_stdout.
+        $logOutput = new log_output_mtrace();
+
+        // Define test data.
+        $message = 'Test message';
+        $level = util::LEVEL_TRACE; // Assuming 100 corresponds to TRACE level
+        $component = 'testcomponent';
+        $title = 'testtitle';
+        $time = time();
+        $user_id = null;
+
+        // Start output buffering.
+        ob_start();
+
+        // Call the output method.
+        $logOutput->output($message, $level, $component, $title, $time, $user_id);
+
+        // Get the output and clean the buffer.
+        $output = ob_get_clean();
+
+        // Assert that the output contains the expected components.
+        $this->assertStringContainsString('[' . date('Y-m-d H:i:s', $time) . ']', $output);
+        $this->assertStringContainsString('TRACE', $output);
+        $this->assertStringContainsString($component, $output);
+        $this->assertStringContainsString($title . ':', $output);
+        $this->assertStringContainsString($message, $output);
+    }
+}
\ No newline at end of file
diff --git a/tests/local/output/log_output_stdout_test.php b/tests/local/output/log_output_stdout_test.php
index 5a87bed..22fdd00 100644
--- a/tests/local/output/log_output_stdout_test.php
+++ b/tests/local/output/log_output_stdout_test.php
@@ -1,7 +1,8 @@
 <?php
 
+namespace local_logging\local\output;
+
 use local_logging\lib\adler_testcase;
-use local_logging\local\output\log_output_stdout;
 use local_logging\local\util;
 
 defined('MOODLE_INTERNAL') || die();