feat(rule): id-length: accept max 30 chars, allow $, R, i, _

Author: robertrossmann

coding-styles/recommended.js

@@ -47,10 +47,16 @@ module.exports = {
     // identifier length convention.
     'id-length': ['warn', {
       min: 2,
-      max: 25,
+      max: 30,
       exceptions: [
+        // index
         'i',
+        // lodash 💩
         '_',
+        // ramda 😍
+        'R',
+        // jQuery 🤮
+        '$',
       ],
     }],