Temporarily use Level/abstract-level#explicit-snapshots

Author: vweevers

package.json

@@ -20,7 +20,7 @@
     "CHANGELOG.md"
   ],
   "dependencies": {
-    "abstract-level": "^2.0.1",
+    "abstract-level": "github:Level/abstract-level#explicit-snapshots",
     "functional-red-black-tree": "^1.0.1",
     "module-error": "^1.0.1"
   },