Merge pull request #61 from Xerkus/hotfix/dependency

Bump snapshot store dependency to stable

Author: prolic

composer.json

@@ -30,7 +30,7 @@
         "psr/container": "^1.0",
         "sandrokeil/interop-config": "^2.0.1",
         "phpunit/phpunit": "^6.0",
-        "prooph/snapshot-store": "1.0.x-dev",
+        "prooph/snapshot-store": "^1.2.0",
         "prooph/php-cs-fixer-config": "^0.1.1",
         "phpspec/prophecy": "^1.7",
         "satooshi/php-coveralls": "^1.0",