allow 1.x versions.

Author: makasim

composer.json

@@ -38,7 +38,7 @@
     ],
     "require": {
         "php": ">=5.5.0",
-        "payum/core": "1.0.*@dev",
+        "payum/core": "~1.0",
         "symfony/framework-bundle": "~2.7",
         "symfony/twig-bundle": "~2.7",
         "symfony/form": "~2.7",
@@ -53,9 +53,9 @@
         "symfony/phpunit-bridge": "~2.7",
         "sonata-project/admin-bundle": "~2.0",
         "doctrine/orm": "2.3.*",
-        "payum/payum": "1.0.*@dev",
-        "payum/omnipay-bridge": "1.0.*@dev",
-        "payum/jms-payment-bridge": "1.0.*@dev",
+        "payum/payum": "~1.0",
+        "payum/omnipay-bridge": "~1.0",
+        "payum/jms-payment-bridge": "~1.0",
         "omnipay/dummy": "~2.0",
         "omnipay/stripe": "~2.0",
         "omnipay/paypal": "~2.0",