Update cognitive-complexity number (#13)

Change cognitive-complexity back to 25 for most files
Make test files and such have complexity of 50

Author: FSVetaz

demo/test/snapshots/linting-config.test.js.md

@@ -2688,7 +2688,7 @@ Generated by [AVA](https://ava.li).
         ],␊
         "sonarjs/cognitive-complexity": [␊
           "warn",␊
-          50␊
+          25␊
         ],␊
         "sonarjs/max-switch-cases": [␊
           "warn",␊

demo/test/snapshots/linting-config.test.js.snap

@@ -40,7 +40,7 @@ module.exports = {
     'promise/no-return-in-finally': 'warn',
     'promise/valid-params': 'warn',
 
-    'sonarjs/cognitive-complexity': ['warn', 50],
+    'sonarjs/cognitive-complexity': ['warn', 25],
     // sonarjs/elseif-without-else
     'sonarjs/max-switch-cases': ['warn', 10],
     'sonarjs/no-all-duplicated-branches': 'warn',
@@ -100,7 +100,7 @@ module.exports = {
       rules: {
         'no-alert': 'off',
         'no-console': 'off',
-        'sonarjs/cognitive-complexity': 'off',
+        'sonarjs/cognitive-complexity': ['warn', 50],
         'sonarjs/no-duplicate-string': 'off',
         'sonarjs/no-identical-functions': 'off',
         'test-selectors/anchor': 'off',

es6.js

@@ -1,6 +1,6 @@
 {
   "name": "eslint-config-tree",
-  "version": "6.0.0-alpha.1",
+  "version": "6.0.0-alpha.2",
   "description": "Shared Tree configuration that contains overrides and enhancements on top of the base frontier configuration.",
   "main": "index.js",
   "repository": {