fix: require versions + FA v5 allowed

composer.json

@@ -16,12 +16,11 @@
         "url": "http:\/\/www.pcsg.de"
     },
     "require": {
-        "php": ">=5.3",
-        "quiqqer\/quiqqer": ">=1.1|dev-master|dev-dev",
-        "quiqqer\/fontawesome": "4.*|dev-master|dev-dev",
-        "quiqqer\/unsemantic": "1.*|dev-master|dev-dev",
-        "quiqqer\/utils": ">=1.7|dev-master|dev-dev",
-        "quiqqer\/buttons": ">=1.0.0|dev-master|dev-dev"
+        "quiqqer\/quiqqer": "^1|dev-master|dev-dev",
+        "quiqqer\/fontawesome": "^5|^4|dev-master|dev-dev",
+        "quiqqer\/unsemantic": "^1|dev-master|dev-dev",
+        "quiqqer\/utils": "^1.7|dev-master|dev-dev",
+        "quiqqer\/buttons": "^1|dev-master|dev-dev"
     },
     "suggest": {
         "quiqqer\/template-presentation": "Business and marketing template for promoting your company or product online."