Change auto-update to point to v0.5.1

app/update.json

 {
-  "latestVersion": "0.5.0",
-  "latestVersionCode": "7",
-  "url": "https://github.com/pazaan/600SeriesAndroidUploader/releases",
+  "latestVersion": "0.5.1",
+  "latestVersionCode": "9",
+  "url": "https://github.com/pazaan/600SeriesAndroidUploader/releases/tag/v0.5.1",
   "releaseNotes": [
-    "- Improvements to pump polling to avoid radio interference",
-    "- Add update checking",
-    "- Stability fixes"
+    "- Further improvements to polling",
+    "- Crash fixes",
+    "- Fix fingerstick BG reporting",
+    "- Refresh the display correctly after polling from the pump",
+    "- Add icons to log entries",
+    "- Add auto-scrolling to status log",
+    "- Fix trend arrows truncated on some phones"
   ]
 }