Changelog

• Add wall railings option to castle creator
• Add support for stair variants
• Add wooden stair variant
• Add maximum movement boundaries to props
• Add half version of square and round tower as props
• Add no doors version of square tower prop
• Make units respond to player taunts while in battle
• Slightly adjust artillery projectile trajectory to go over the walls more often during siege battles
• Fix castle validation and grid logic
• Fix prop grid bounds check
• Fix archers not spawning in towers
• Fix loose battlement prop material settings