- Support specifying URL in loginParameters for connecting to OpenSim

- Patch some miscellaneous OpenSim related glitches
- Add waitForRegionHandshake function
- Add a concurrent promise queue
- Fix xml writing of Vector3s
- Fix asset downloading on grids without HTTP assets
- Fix buildObject to properly orientate prims
- Wrangled with CreateSelected all day and it turned out to be an OpenSim bug
- LinkFrom function for faster linking
- Updated LLSD library to fix LLMesh decoding

lib/classes/public/GameObject.ts

@@ -853,6 +853,28 @@ export class GameObject implements IGameObjectData
         await this.region.circuit.waitForAck(this.region.circuit.sendMessage(msg, PacketFlags.Reliable), 30000);
     }
 
+    async linkFrom(objects: GameObject[])
+    {
+        const msg = new ObjectLinkMessage();
+        msg.AgentData = {
+            AgentID: this.region.agent.agentID,
+            SessionID: this.region.circuit.sessionID
+        };
+        msg.ObjectData = [
+            {
+                ObjectLocalID: this.ID
+            }
+        ];
+        for (const obj of objects)
+        {
+            msg.ObjectData.push(
+            {
+                ObjectLocalID: obj.ID
+            });
+        }
+        await this.region.circuit.waitForAck(this.region.circuit.sendMessage(msg, PacketFlags.Reliable), 30000);
+    }
+
     async setDescription(desc: string)
     {
         this.description = desc;