Run eslint against all files

package.json

@@ -13,7 +13,7 @@
     "bdd"
   ],
   "scripts": {
-    "posttest": "eslint src/**/*.js spec/**/*.js && prettier --check src/**/*.js spec/**/*.js",
+    "posttest": "eslint \"src/**/*.js\" \"spec/**/*.js\" && prettier --check src/**/*.js spec/**/*.js",
     "test": "grunt --stack execSpecsInNode",
     "cleanup": "prettier --write src/**/*.js spec/**/*.js",
     "build": "grunt buildDistribution",
@@ -28,7 +28,7 @@
   "devDependencies": {
     "acorn": "^6.0.0",
     "ejs": "^2.5.5",
-    "eslint": "^5.16.0",
+    "eslint": "7.3.1",
     "express": "^4.16.4",
     "fast-check": "^1.21.0",
     "fast-glob": "^2.2.6",
@@ -67,10 +67,6 @@
         }
       ],
       "block-spacing": "error",
-      "comma-dangle": [
-        "error",
-        "never"
-      ],
       "func-call-spacing": [
         "error",
         "never"