Xrpl-py

- `book_changes`: Returns a `validated` field in its response, which was missing in prior versions.

The following is a non-breaking addition to the API.

- The `feature` method now has a non-admin mode for users. (It was previously only available to admin connections.) The method returns an updated list of amendments, including their names and other information. ([4781](https://github.com/XRPLF/rippled/pull/4781))

Fixed

- Replaced alias for `classic_address` with separate property to work around this mypy issue:
https://github.com/python/mypy/issues/6700

[Version 2.0.0](https://github.com/XRPLF/rippled/releases/tag/2.0.0) was released on Jan 9, 2024. The following additions are non-breaking (because they are purely additive):

- `server_definitions`: A new RPC that generates a `definitions.json`-like output that can be used in XRPL libraries.
- In `Payment` transactions, `DeliverMax` has been added. This is a replacement for the `Amount` field, which should not be used. Typically, the `delivered_amount` (in transaction metadata) should be used. To ease the transition, `DeliverMax` is present regardless of API version, since adding a field is non-breaking.
- API version 2 has been moved from beta to supported, meaning that it is generally available (regardless of the `beta_rpc_api` setting).

[Version 1.12.0](https://github.com/XRPLF/rippled/releases/tag/1.12.0) was released on Sep 6, 2023. The following additions are non-breaking (because they are purely additive).

- `server_info`: Added `ports`, an array which advertises the RPC and WebSocket ports. This information is also included in the `/crawl` endpoint (which calls `server_info` internally). `grpc` and `peer` ports are also included. (https://github.com/XRPLF/rippled/pull/4427)
- `ports` contains objects, each containing a `port` for the listening port (a number string), and a `protocol` array listing the supported protocols on that port.
- This allows crawlers to build a more detailed topology without needing to port-scan nodes.
- (For peers and other non-admin clients, the info about admin ports is excluded.)
- Clawback: The following additions are gated by the Clawback amendment (`featureClawback`). (https://github.com/XRPLF/rippled/pull/4553)
- Adds an [AccountRoot flag](https://xrpl.org/accountroot.html#accountroot-flags) called `lsfAllowTrustLineClawback` (https://github.com/XRPLF/rippled/pull/4617)
- Adds the corresponding `asfAllowTrustLineClawback` [AccountSet Flag](https://xrpl.org/accountset.html#accountset-flags) as well.
- Clawback is disabled by default, so if an issuer desires the ability to claw back funds, they must use an `AccountSet` transaction to set the AllowTrustLineClawback flag. They must do this before creating any trust lines, offers, escrows, payment channels, or checks.
- Adds the [Clawback transaction type](https://github.com/XRPLF/XRPL-Standards/blob/master/XLS-39d-clawback/README.md#331-clawback-transaction), containing these fields:
- `Account`: The issuer of the asset being clawed back. Must also be the sender of the transaction.
- `Amount`: The amount being clawed back, with the `Amount.issuer` being the token holder's address.
- Adds [AMM](https://github.com/XRPLF/XRPL-Standards/discussions/78) ([#4294](https://github.com/XRPLF/rippled/pull/4294), [#4626](https://github.com/XRPLF/rippled/pull/4626)) feature:
- Adds `amm_info` API to retrieve AMM information for a given tokens pair.
- Adds `AMMCreate` transaction type to create `AMM` instance.
- Adds `AMMDeposit` transaction type to deposit funds into `AMM` instance.
- Adds `AMMWithdraw` transaction type to withdraw funds from `AMM` instance.
- Adds `AMMVote` transaction type to vote for the trading fee of `AMM` instance.
- Adds `AMMBid` transaction type to bid for the Auction Slot of `AMM` instance.
- Adds `AMMDelete` transaction type to delete `AMM` instance.
- Adds `sfAMMID` to `AccountRoot` to indicate that the account is `AMM`'s account. `AMMID` is used to fetch `ltAMM`.
- Adds `lsfAMMNode` `TrustLine` flag to indicate that one side of the `TrustLine` is `AMM` account.
- Adds `tfLPToken`, `tfSingleAsset`, `tfTwoAsset`, `tfOneAssetLPToken`, `tfLimitLPToken`, `tfTwoAssetIfEmpty`,
`tfWithdrawAll`, `tfOneAssetWithdrawAll` which allow a trader to specify different fields combination
for `AMMDeposit` and `AMMWithdraw` transactions.
- Adds new transaction result codes:
- tecUNFUNDED_AMM: insufficient balance to fund AMM. The account does not have funds for liquidity provision.
- tecAMM_BALANCE: AMM has invalid balance. Calculated balances greater than the current pool balances.
- tecAMM_FAILED: AMM transaction failed. Fails due to a processing failure.
- tecAMM_INVALID_TOKENS: AMM invalid LP tokens. Invalid input values, format, or calculated values.
- tecAMM_EMPTY: AMM is in empty state. Transaction requires AMM in non-empty state (LP tokens > 0).
- tecAMM_NOT_EMPTY: AMM is not in empty state. Transaction requires AMM in empty state (LP tokens == 0).
- tecAMM_ACCOUNT: AMM account. Clawback of AMM account.
- tecINCOMPLETE: Some work was completed, but more submissions required to finish. AMMDelete partially deletes the trustlines.

- Added `nftoken_id`, `nftoken_ids` and `offer_id` meta fields into NFT `tx` and `account_tx` responses. (https://github.com/XRPLF/rippled/pull/4447)
- Added an `account_flags` object to the `account_info` method response. (https://github.com/XRPLF/rippled/pull/4459)
- Added `NFTokenPages` to the `account_objects` RPC. (https://github.com/XRPLF/rippled/pull/4352)
- Fixed: `marker` returned from the `account_lines` command would not work on subsequent commands. (https://github.com/XRPLF/rippled/pull/4361)