Prepare release

Change-Id: Ic86c192739639352c5ddc6842df5404a33f883e7
diff --git a/package.json b/package.json
index 5e6f175..41f7b48 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "Kalamar",
   "description": "Mojolicious-based Frontend for KorAP",
   "license": "BSD-2-Clause",
-  "version": "0.57.0",
+  "version": "0.57.1",
   "pluginVersion": "0.2.2",
   "engines": {
     "node": ">=6.0.0"