0.138.3: more utility methods.

• Add try_from_scaled methods for BaseCurrency and QuoteCurrency.
• Add to_f64 and to_f32 methods for BaseCurrency and QuoteCurrency
• Make new_weighted_price public on QuoteCurrency.
• Add invert method to PositionSide
• Add method iter for SortedOrders
• Make more methods of SortedOrders public
• CI: include a review.yml workflow backed my local inference with Qwen3.8-27B.