chore(package): update eslint-plugin-ava to version 8.0.0

Closes #76

Author: greenkeeper[bot]

package.json

@@ -63,7 +63,7 @@
     "coveralls": "^2.13.1",
     "cz-conventional-changelog": "^2.0.0",
     "eslint": "^4.1.1",
-    "eslint-plugin-ava": "^4.2.1",
+    "eslint-plugin-ava": "^8.0.0",
     "eslint-plugin-react": "^7.1.0",
     "husky": "^0.14.3",
     "immutable": "^3.8.1",