Update league/flysystem (#7)

composer.lock

@@ -8,26 +8,26 @@
     "packages": [
         {
             "name": "league/flysystem",
-            "version": "1.0.46",
+            "version": "1.0.47",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "f3e0d925c18b92cf3ce84ea5cc58d62a1762a2b2"
+                "reference": "a11e4a75f256bdacf99d20780ce42d3b8272975c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/f3e0d925c18b92cf3ce84ea5cc58d62a1762a2b2",
-                "reference": "f3e0d925c18b92cf3ce84ea5cc58d62a1762a2b2",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/a11e4a75f256bdacf99d20780ce42d3b8272975c",
+                "reference": "a11e4a75f256bdacf99d20780ce42d3b8272975c",
                 "shasum": ""
             },
             "require": {
+                "ext-fileinfo": "*",
                 "php": ">=5.5.9"
             },
             "conflict": {
                 "league/flysystem-sftp": "<1.0.6"
             },
             "require-dev": {
-                "ext-fileinfo": "*",
                 "phpspec/phpspec": "^3.4",
                 "phpunit/phpunit": "^5.7.10"
             },
@@ -88,7 +88,7 @@
                 "sftp",
                 "storage"
             ],
-            "time": "2018-08-22T07:45:22+00:00"
+            "time": "2018-09-14T15:30:29+00:00"
         },
         {
             "name": "mikecao/flight",