Upgrade leveldown from ~5.1.0 to ~5.2.0 (#130)

greenkeeper[bot] · vweevers · commit 1f54215ca73c · 2019-09-06T22:54:50.000+03:00
diff --git a/package.json b/package.json
@@ -38,7 +38,7 @@
     "tape": "^4.8.0"
   },
   "optionalDependencies": {
-    "leveldown": "~5.1.0"
+    "leveldown": "~5.2.0"
   },
   "hallmark": {
     "community": "level-community",
