bumped version to 2.5.0

CHANGELOG

@@ -1,4 +1,4 @@
-* 2.4.9 (2018-XX-XX)
+* 2.5.0 (2018-XX-XX)
 
  * added the Symfony ctype polyfill as a dependency
 

composer.json

@@ -51,7 +51,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.4-dev"
+            "dev-master": "2.5-dev"
         }
     }
 }

lib/Twig/Environment.php

@@ -16,11 +16,11 @@
  */
 class Twig_Environment
 {
-    const VERSION = '2.4.9-DEV';
-    const VERSION_ID = 20409;
+    const VERSION = '2.5.0-DEV';
+    const VERSION_ID = 20500;
     const MAJOR_VERSION = 2;
-    const MINOR_VERSION = 4;
-    const RELEASE_VERSION = 9;
+    const MINOR_VERSION = 5;
+    const RELEASE_VERSION = 0;
     const EXTRA_VERSION = 'DEV';
 
     private $charset;