Use highest phpstan level

Author: enumag

.travis.yml

@@ -26,7 +26,7 @@ before_script:
 script:
     - "! (composer outdated --direct | grep ^)"
     - vendor/bin/php-cs-fixer fix --dry-run
-    - vendor/bin/phpstan analyse --level=7 --configuration=phpstan.neon src tests
+    - vendor/bin/phpstan analyse --level=max --configuration=phpstan.neon src tests
     - vendor/bin/codecept run $coverage
 
 after_success:

composer.json

@@ -48,7 +48,7 @@
             "@test"
         ],
         "fix": "\"vendor/bin/php-cs-fixer\" fix",
-        "analyse": "\"vendor/bin/phpstan\" analyse --no-progress --level=7 --configuration=phpstan.neon src tests",
+        "analyse": "\"vendor/bin/phpstan\" analyse --no-progress --level=max --configuration=phpstan.neon src tests",
         "test": [
             "\"vendor/bin/codecept\" build",
             "\"vendor/bin/codecept\" run --debug"