Merge pull request #315 from ianmacd/pr3

Add oxen-rpc.caliban.org as an extra RPC node.

src-electron/main-process/modules/backend.js

@@ -122,19 +122,19 @@ export class Backend {
 
     this.remotes = [
       {
-        host: "imaginary.stream",
+        host: "public-na.optf.ngo",
         port: "22023"
       },
       {
-        host: "nodes.hashvault.pro",
-        port: "22023"
-      },
-      {
-        host: "explorer.loki.aussie-pools.com",
+        host: "explorer.oxen.aussie-pools.com",
         port: "18081"
       },
       {
-        host: "public.loki.foundation",
+        host: "public-eu.optf.ngo",
+        port: "22023"
+      },
+      {
+        host: "oxen-rpc.caliban.org",
         port: "22023"
       }
     ];