Stable Master Healer
When you visit a stable master, this simple add-on will automatically ask the stable master to heal and revive your battle pets. If you're a hunter, you'll be required to click "I'd like to heal and revive my battle pets", but you won't have to click the confirmation. If you're not a hunter, all you have to do is right-click the stable master and your pets will be healed. Note that this add-on will verify that the cost is 10 silver. If the cost is different, it means something unexpected happened, and the add-on won't do anything else.