Allow new versions of PSR cache & fix indent

Author: Valentin Nazarov

composer.json

@@ -13,7 +13,7 @@
   "require": {
     "php": "^5.6||^7.0||^8.0",
     "symfony/expression-language": ">=2.7",
-    "psr/cache": "^1.0"
+    "psr/cache": "^1.0||^2.0||^3.0"
   },
   "require-dev": {
     "phpunit/phpunit": "*",
@@ -35,9 +35,9 @@
     "flagception/database-activator": "Fetch feature flags from database."
   },
   "scripts": {
-	"phpunit": "phpunit --coverage-text -c ./build/phpunit.xml",
-	"checkstyle": "phpcs --standard=./build/phpcs.xml ./src",
-	"analyze": "@checkstyle",
-	"test": "@phpunit"
+    "phpunit": "phpunit --coverage-text -c ./build/phpunit.xml",
+    "checkstyle": "phpcs --standard=./build/phpcs.xml ./src",
+    "analyze": "@checkstyle",
+    "test": "@phpunit"
   }
 }