Merge pull request #2 from FreshMail/feature-APPDEV-5394

APPDEV-5394 upgrade monolog

Author: ankalagon

composer.json

@@ -11,8 +11,9 @@
     },
     "require": {
         "php": "^7.0",
+        "ext-json":  "*",
         "guzzlehttp/guzzle": "^6.3",
-        "monolog/monolog": "^1.24",
+        "monolog/monolog": "^1.24|^2.0",
         "psr/log": "^1.1",
         "psr/http-message": "^1.0",
         "myclabs/php-enum": "^1.7"