Switch to Level/encoding-down master

Author: vweevers

package.json

@@ -30,7 +30,7 @@
     "coveralls": "^3.0.2",
     "delayed": "^2.0.0",
     "dependency-check": "^3.3.0",
-    "encoding-down": "github:Level/encoding-down#add-clear",
+    "encoding-down": "github:Level/encoding-down",
     "hallmark": "^1.0.0",
     "level-community": "^3.0.0",
     "level-concat-iterator": "^2.0.1",