prepared the 1.40.0 release

CHANGELOG

@@ -1,4 +1,4 @@
-* 1.40.0 (2019-XX-XX)
+* 1.40.0 (2019-04-28)
 
  * allowed Twig\NodeVisitor\NodeVisitorInterface::leaveNode() to return "null" instead of "false" (same meaning)
  * added the "apply" tag as a replacement for the "filter" tag

ext/twig/php_twig.h

@@ -15,7 +15,7 @@
 #ifndef PHP_TWIG_H
 #define PHP_TWIG_H
 
-#define PHP_TWIG_VERSION "1.40.0-DEV"
+#define PHP_TWIG_VERSION "1.40.0"
 
 #include "php.h"
 

src/Environment.php

@@ -41,12 +41,12 @@ use Twig\TokenParser\TokenParserInterface;
  */
 class Environment
 {
-    const VERSION = '1.40.0-DEV';
+    const VERSION = '1.40.0';
     const VERSION_ID = 14000;
     const MAJOR_VERSION = 1;
     const MINOR_VERSION = 40;
     const RELEASE_VERSION = 0;
-    const EXTRA_VERSION = 'DEV';
+    const EXTRA_VERSION = '';
 
     protected $charset;
     protected $loader;