upgrade to latest pubsweet client

package.json

@@ -14,7 +14,7 @@
     "html-webpack-plugin": "2.28.0",
     "json-loader": "0.5.4",
     "lodash": "4.17.4",
-    "pubsweet-client": "0.9.0",
+    "pubsweet-client": "0.9.1",
     "pubsweet-component-blog": "0.1.3",
     "pubsweet-component-ink-backend": "0.0.5",
     "pubsweet-component-ink-frontend": "0.0.2",