Updates for PHP v8.1 (#10)

* CI on PHP v8.1
* Updates PHP deps
* Small styling issues

Author: SmetDenis

.github/workflows/main.yml

@@ -35,7 +35,7 @@ jobs:
       JBZOO_COMPOSER_UPDATE_FLAGS: ${{ matrix.composer_flags }}
     strategy:
       matrix:
-        php-version: [ 7.2, 7.3, 7.4, 8.0 ]
+        php-version: [ 7.2, 7.3, 7.4, 8.0, 8.1 ]
         composer_flags: [ "--prefer-lowest", "" ]
     steps:
       - name: Checkout code
@@ -111,7 +111,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: [ 7.2, 7.3, 7.4, 8.0 ]
+        php-version: [ 7.2, 7.3, 7.4, 8.0, 8.1 ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
@@ -144,7 +144,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: [ 7.2, 7.3, 7.4, 8.0 ]
+        php-version: [ 7.2, 7.3, 7.4, 8.0, 8.1 ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v2

composer.json

@@ -25,13 +25,13 @@
 
         "jbzoo/data"      : "^4.3.0",
         "jbzoo/markdown"  : "^1.1.0",
-        "symfony/console" : "^4.4|^5.0",
-        "symfony/process" : "^4.4|^5.0",
-        "composer/semver" : "^1.0|^2.0|^3.0"
+        "symfony/console" : ">=4.4",
+        "symfony/process" : ">=4.4",
+        "composer/semver" : ">=1.0"
     },
 
     "require-dev"  : {
-        "jbzoo/toolbox-dev"         : "^3.1.0",
+        "jbzoo/toolbox-dev"         : "^3.2.0",
         "roave/security-advisories" : "dev-master"
     },
 
@@ -47,7 +47,10 @@
 
     "bin"          : ["composer-diff"],
     "config"       : {
-        "optimize-autoloader" : true
+        "optimize-autoloader" : true,
+        "allow-plugins"       : {
+            "composer/package-versions-deprecated" : true
+        }
     },
 
     "extra"        : {