Update to marked 1.2.0 (close #8029)

config/rollup.config.legacy.js

@@ -28,7 +28,11 @@ export default {
     nodeResolve({ dedupe: ['object-inspect'] }),
     commonjs(),
     json({ indent: '' }),
-    buble()
+    buble({
+      transforms: {
+        dangerousForOf: true
+      }
+    })
   ]
 };
 

package.json

@@ -55,7 +55,7 @@
     "fast-deep-equal": "~3.1.1",
     "fast-json-stable-stringify": "2.1.0",
     "lodash-es": "~4.17.15",
-    "marked": "1.0.0",
+    "marked": "1.2.0",
     "martinez-polygon-clipping": "0.7.0",
     "node-diff3": "2.1.0",
     "osm-auth": "1.1.0",