Merge pull request #78 from magento-research/develop

Merge develop to master

Author: devpatil7

composer.json

@@ -7,7 +7,7 @@
         "php": ">= 7.1",
         "mustache/mustache": "^2.12",
         "ralouphie/mimey": "^2.0",
-        "symfony/yaml": "^2.3||^3.3",
+        "symfony/yaml": "^2.3 || ^3.3 || ^4.0",
         "zendframework/zend-http": "^2.6",
         "zendframework/zend-stdlib": "^2.7 || ^3.2"
     },