YUNG's API

3.8.7 Changelog
Bunch of Jigsaw changes + improvements:

• Added delay_generation action type.
• Added random_chance structure condition type.
• StructureModifiers now use 'actions' field instead of singular 'action'.
• StructureTargetSelectors now return a list of PieceEntry's instead of an Optional.
• Changed piece_in_horizontal_direction wildcard to 'yungsapi:all' to match other conditions.
• Fixed piece search conditions erroneously passing if they had internal jigsaw pieces.
• Fixed deadend pieces not properly updating stored piece counts when removing previous piece.
• Fixed TransformAction not properly updating stored PieceEntry with the new piece's bounding box.
• Fixed piece counts not being updated when deadend pool is used. Small optimizations & null checks to some conditions.