Update league/flysystem (#3)

composer.lock

@@ -1,23 +1,23 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "ff5928bff4f35e40b33b816f810d4409",
+    "content-hash": "5cfcc3867055505cdbf9eaf2829f6a8a",
     "packages": [
         {
             "name": "league/flysystem",
-            "version": "1.0.44",
+            "version": "1.0.45",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "168dbe519737221dc87d17385cde33073881fd02"
+                "reference": "a99f94e63b512d75f851b181afcdf0ee9ebef7e6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/168dbe519737221dc87d17385cde33073881fd02",
-                "reference": "168dbe519737221dc87d17385cde33073881fd02",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/a99f94e63b512d75f851b181afcdf0ee9ebef7e6",
+                "reference": "a99f94e63b512d75f851b181afcdf0ee9ebef7e6",
                 "shasum": ""
             },
             "require": {
@@ -88,7 +88,7 @@
                 "sftp",
                 "storage"
             ],
-            "time": "2018-04-06T09:58:14+00:00"
+            "time": "2018-05-07T08:44:23+00:00"
         },
         {
             "name": "mikecao/flight",
@@ -390,6 +390,8 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "php": ">=7.1"
+    },
     "platform-dev": []
 }