Update notes for 1.0.22

A critical Unity security issue required an immediate update that affected most Unity-based apps, including the Dynamic Dungeons Editor. We’ve already applied the patch, but the rapid upgrade may cause temporary bugs or unexpected behavior. Please bear with us while we sort everything out. We also improved the Editor by integrating the AoE tool hierarchy and adjusting the UI to make area-of-effect tools easier to grab and move. Thank you very much for your patience and support.