chain-0.23.3

Release chain-0.23.3

Added

- Add new `list_ordered_canonical_txs` method to `TxGraph` that returns canonical transactions in topological order. #2027
- Add new `spent_txouts` and `created_txouts` methods on `SpkTxOutIndex` and `KeychainTxOutIndex`. #2161
- Add new `SpentTxOut` and `CreatedTxOut` structs returned by `spent_txouts` and `created_txouts` functions. #2161

Fixed

- Fixed `ChainPosition` ordering so unconfirmed transactions never seen in mempool appear last instead of first. #2146
- The `Anchor::confirmation_height_upper_bound` impl was missing for `&A`, causing it to fallback to the default impl. #2149
- Previously, assumed-canonical transactions always became unconfirmed even though the transaction may be anchored in the best chain. #2150

Changed

- Simplified `FullTxOut` ordering to only use essential fields (chain_position, outpoint, spent_by). #2146
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