chore: Update static files.

.gitattributes

@@ -1,6 +1,12 @@
-/.env.example       export-ignore
-/.gitattributes     export-ignore
-/.gitignore         export-ignore
-/phpunit.xml        export-ignore
-/README.md          export-ignore
-/tests              export-ignore
+/spec export-ignore
+.editorconfig export-ignore
+.gitattributes export-ignore
+.gitignore export-ignore
+.scrutinizer.yml export-ignore
+.travis.yml export-ignore
+infection.json.dist export-ignore
+grumphp.yml.dist export-ignore
+phpspec.yml.dist export-ignore
+/docs export-ignore
+/docker export-ignore
+docker-compose.yaml

.gitignore

@@ -3,3 +3,4 @@
 /.env
 /test.php
 /composer.lock
+.phpunit.result.cache

.scrutinizer.yml

@@ -0,0 +1,21 @@
+build:
+    nodes:
+        analysis:
+            environment:
+                php:
+                    version: 7.4
+            tests:
+                override:
+                    - php-scrutinizer-run
+
+filter:
+    paths:
+        - 'src/*'
+
+tools:
+    external_code_coverage:
+        timeout: 600
+    php_loc: true
+    php_pdepend: true
+    php_sim: true
+    php_changetracking: true

grumphp.yml.dist

@@ -0,0 +1,19 @@
+imports:
+  - { resource: vendor/drupol/php-conventions/config/php73/grumphp.yml }
+
+parameters:
+  tasks.phpstan.configuration: phpstan.neon
+  extra_tasks:
+    psalm:
+      show_info: true
+    phpspec:
+      verbose: true
+    clover_coverage:
+      clover_file: build/logs/clover.xml
+      level: 80
+    infection:
+      threads: 10
+      test_framework: phpspec
+      configuration: infection.json.dist
+      min_msi: 50
+      min_covered_msi: 50

infection.json.dist

@@ -0,0 +1,18 @@
+{
+    "timeout": 10,
+    "source": {
+        "directories": [
+            "src"
+        ]
+    },
+    "logs": {
+        "text": "build/infection.log",
+        "summary": "build/summary.log",
+        "debug": "build/debug.log",
+        "perMutator": "build/per-mutator.md",
+        "badge": {
+            "branch": "master"
+        }
+    },
+    "testFramework":"phpspec"
+}