Ordinals Founder: ord 0.21.3 update has now been released

Ordinals founder Casey announced on the X platform that ord 0.21.3 has now been released, including the following major updates:
1. Users can add metadata when burning inscriptions. This is unstructured, human-readable metadata displayed on the page of burned inscriptions;
2. A new command "ord wallet split" has been added for executing arbitrary asset splits;
3. A new command "ord wallet sign" has been added, allowing messages to be signed using addresses in the wallet.