up php to 8, refactoring

Author: alexpts

.gitignore

@@ -1,3 +1,4 @@
 /vendor/
 test/clover.xml
+test/.phpunit.result.cache
 .idea

.scrutinizer.yml

@@ -18,7 +18,7 @@ coding_style:
 build:
     environment:
         php:
-            version: 7.4
+            version: 8.0
     tests:
         override:
             -

.travis.yml

@@ -1,7 +1,8 @@
 sudo: false
 language: php
 php:
-  - 7.4
+  #- 8.0
+  - nightly
 
 before_script:
   - composer self-update

composer.json

@@ -7,7 +7,8 @@
     "keywords": [
         "DI",
         "Symfony",
-        "Factory"
+        "Factory",
+        "Container"
     ],
     "authors": [{
         "name": "Alexpts",
@@ -18,7 +19,7 @@
     },
     "minimum-stability": "stable",
     "require": {
-        "php": "~7.4",
+        "php": "~8.0",
         "ext-json": "*",
         "symfony/dependency-injection": "~5.1",
         "symfony/yaml": "^5.1",
@@ -35,7 +36,7 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.2",
+        "phpunit/phpunit": "^9.4",
         "mikey179/vfsstream": "^1.6"
     }
 }