chore(package): update ava to version 3.4.0

Closes #33

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "@semantic-release/release-notes-generator": "^6.0.12",
     "@types/lokijs": "^1.5.2",
     "@types/ramda": "github:types/npm-ramda#dist",
-    "ava": "^0.25.0",
+    "ava": "^3.4.0",
     "concurrently": "^3.6.0",
     "cz-conventional-changelog": "^2.1.0",
     "nyc": "^12.0.2",