bump 5.6.4

Mpdreamz · Mpdreamz · commit 5459014b681e · 2018-09-19T16:12:17.000+02:00
diff --git a/global.json b/global.json
@@ -2,5 +2,5 @@
   "sdk": {
     "version": "2.1.300"
   },
-  "version": "5.6.3"
+  "version": "5.6.4"
 }
