Preparing for the upcoming react/cache 0.5

Author: WyriHaximus

composer.json

@@ -9,9 +9,9 @@
         }
     ],
     "require": {
-        "php": "^7.0 || ^5.6",
-        "react/cache": "^0.4.1",
-        "clue/redis-react": "^2.0 || ^1.0 || ^0.5.1"
+        "php": "^7.2",
+        "clue/redis-react": "^2.0 || ^1.0 || ^0.5.1",
+        "react/cache": "dev-master as v0.4.0"
     },
     "require-dev": {
         "api-clients/test-utilities": "^4.3"
@@ -29,7 +29,7 @@
     "config": {
         "sort-packages": true,
         "platform": {
-            "php": "7.0"
+            "php": "7.2"
         }
     },
     "scripts": {