Disallow comparing against -0 (no-compare-neg-zero)

Fixes: standard/standard#812

Author: feross

eslintrc.json

@@ -57,6 +57,7 @@
     "no-array-constructor": "error",
     "no-caller": "error",
     "no-class-assign": "error",
+    "no-compare-neg-zero": "error",
     "no-cond-assign": "error",
     "no-const-assign": "error",
     "no-constant-condition": ["error", { "checkLoops": false }],