Upgrade to PHP 5.4

Author: Jleagle

.travis.yml

@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 5.3
   - 5.4
   - 5.5
   - 5.6
@@ -16,4 +15,4 @@ script:
  - phpunit --coverage-clover build/logs/clover.xml
 
 matrix:
-  fast_finish: true
+  fast_finish: true

composer.json

@@ -20,6 +20,9 @@
       "Jleagle\\Elo\\": "src"
     }
   },
+  "require":     {
+    "php":               ">=5.4"
+  },
   "require-dev": {
     "phpunit/phpunit": "4.1.*"
   }

src/Elo.php

@@ -59,20 +59,20 @@ private function _makeNewRating($x, $y, $z)
    */
   public function getExpected()
   {
-    return array(
+    return [
       'a' => $this->_expectedA,
       'b' => $this->_expectedB
-    );
+    ];
   }
 
   /**
    * @return float[]
    */
   public function getRatings()
   {
-    return array(
+    return [
       'a' => $this->_newRatingA,
       'b' => $this->_newRatingB
-    );
+    ];
   }
 }