Enforce placing object properties on separate lines (object-property-…

…newline)

Fixes standard/standard#524

eslintrc.json

@@ -122,6 +122,7 @@
     "no-useless-rename": 2,
     "no-whitespace-before-property": 2,
     "no-with": 2,
+    "object-property-newline": [2, { "allowMultiplePropertiesPerLine": true }],
     "one-var": [2, { "initialized": "never" }],
     "operator-linebreak": [2, "after", { "overrides": { "?": "before", ":": "before" } }],
     "padded-blocks": [2, "never"],