Use standard and prettier (#10)

* switch from custom eslint config to standard + prettier

* fix new standard eslint violations

* add editorconfig file

* auto-fix all other violations

* update lint yarn script

* remove jshint comment

.eslintrc.js

@@ -0,0 +1,13 @@
+module.exports = {
+  extends: ['standard', 'eslint-config-prettier'],
+  plugins: ['eslint-plugin-prettier'],
+  rules: {
+    'prettier/prettier': 'error',
+
+    // disable standard style-based rules, that's prettiers job
+    'standard/computed-property-even-spacing': 'off',
+    'node/no-deprecated-api': 'off',
+    'standard/no-callback-literal': 'off',
+    'handle-callback-err': 'off',
+  },
+};