Align minimal PHP version with used constructions.

sibprogrammer · sibprogrammer · commit 9db5f0258e8d · 2017-01-05T21:47:42.000+07:00
diff --git a/composer.json b/composer.json
@@ -10,7 +10,7 @@
     ],
     "minimum-stability": "dev",
     "require": {
-        "php": ">=5.3.0"
+        "php": ">=5.5.0"
     },
     "require-dev": {
         "phpunit/phpunit": "5.5.*",
