Breaking: drop Node.js 6 and 8

Author: vweevers

.github/workflows/test.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [6, 8, 10]
+        node: [10, 12, 14, 16]
     name: Node ${{ matrix.node }}
     steps:
       - name: Checkout

package.json

@@ -50,6 +50,6 @@
     "level"
   ],
   "engines": {
-    "node": ">=6"
+    "node": ">=10"
   }
 }