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ValuedMammal 
Merge bitcoindevkit/bdk#1857: feat(rpc)!: Update `Emitter::mempool` to support `evicted_at`

8513d83a2 feat(bitcoind_rpc)!: Reduce friction of `Emitter` API. (志宇)
0a02d2683 feat(chain): Add convenience conversions for `CanonicalTx` (志宇)
d11f6efe8 feat(graph): add convenience function for inserting relevant `evicted_at`s (Wei Chen)
28ef7c9a2 refactor(rpc)!: update `mempool` interface and test code (valued mammal)

Pull request description:

  Fixes #1740

  ### Description

  Work for this began as part of #1811, based on this [comment](https://github.com/bitcoindevkit/bdk/pull/1811#discussion_r1945941691).

  `Emitter::mempool` now returns a `MempoolEvent` which provides the data for tracking `evicted_at`:

  ```
  pub struct MempoolEvent {
      /// Unemitted transactions or transactions with ancestors that are unseen by the receiver.
      ///
      /// To understand the second condition, consider a receiver which filters transactions based on
      /// whether it alters the UTXO set of tracked script pubkeys. If an emitted mempool transaction
      /// spends a tracked UTXO which is confirmed at height `h`, but the receiver has only seen up to
      /// block of height `h-1`, we want to re-emit this transaction until the receiver has seen the
      /// block at height `h`.
      pub new_txs: Vec<(Transaction, u64)>,

      /// [`Txid`]s of all transactions that have been evicted from mempool.
      pub evicted_txids: HashSet<Txid>,

      /// The latest timestamp of when a transaction entered the mempool.
      ///
      /// This is useful for setting the timestamp for evicted transactions.
      pub latest_update_time: u64,
  }
  ```

  ### Changelog notice

  * Change `Emitter::mempool` to return `MempoolEvent`s which contain mempool-eviction data.
  * Change `Emitter::client` to have more relaxed generic bounds. `C: Deref, ... (continued)

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Source Files on job 14777747999.1