Bump grunt-eslint to ^9.0.0 & update rules

.eslintrc

@@ -15,6 +15,8 @@
         "no-array-constructor": 2,
         "no-bitwise": 2,
         "no-constant-condition": 0,
+        "no-dupe-args": 2,
+        "no-duplicate-case": 2,
         "no-eval": 2,
         "no-floating-decimal": 2,
         "no-implied-eval": 2,
@@ -27,7 +29,6 @@
         "no-process-env": 2,
         "no-reserved-keys": 0,
         "no-self-compare": 2,
-        "no-space-before-semi": 2,
         "no-spaced-func": 2,
         "no-throw-literal": 2,
         "no-trailing-spaces": 2,
@@ -38,6 +39,7 @@
         "quotes": 0,
         "radix": 2,
         "semi": [2, "always"],
+        "semi-spacing": [2, {"before": false, "after": true}],
         "space-after-keywords": [2, "always", {"checkFunctionKeyword": true}],
         "space-before-blocks": [2, "always"],
         "space-before-function-parentheses": [2, {"anonymous": "always", "named": "never"}],

package.json

@@ -42,7 +42,7 @@
     "grunt-contrib-nodeunit": "^0.4.1",
     "grunt-contrib-qunit": "^0.5.2",
     "grunt-contrib-watch": "^0.6.1",
-    "grunt-eslint": "^7.0.0",
+    "grunt-eslint": "^9.0.0",
     "grunt-exec": "^0.4.6",
     "grunt-jscs": "^1.5.0",
     "jquery": "~2.1.3",