-`Psbt` inputs using segwit scripts can now work with nonWitnessUtxo as well as the original witnessUtxo. The reasoning for this is that nonWitnessUtxo has all the information contained in the witnessUtxo, so rejecting signing even though we have all the info we need is unnecessary. Trying to sign a non-segwit script with a witnessUtxo will still throw an Error as it should.
-`ECPair` and `bip32` objects now have a lowR boolean attribute defaulted to false. You may set it to true to ensure that the sign method uses low R values (#1442) (This is to enable low R usage in Psbt, since we decided not to give the low R flag to the Psbt class, since it makes more sense to be an attribute of the Signer interface)
- A new `Psbt` class for creating, distributing, combining, signing, and compiling Transactions (#1425)
- A `name` attribute to the Payment interface. P2SH and P2WSH are nested with `'-'` as separator, and p2ms is in the format of `'p2ms(m of n)''` all others are just hard coded. (#1433)
__changed__
-`TransactionBuilder`: Migrate to stricter type checks during sign by switching to a single object parameter (#1416)
-`tests`: Use regtest-client as separate library (#1421)
# 5.0.5
__added__
- Added `ECPairInterface``Stack` and `StackElement` interfaces to the main index.ts export (TypeScript only affected)
-`ECPair` (and all ECDSA code) now uses [`tiny-secp256k1`](https://github.com/bitcoinjs/tiny-secp256k1), which uses the [`libsecp256k1` library](https://github.com/bitcoin-core/secp256k1) (#1070)
- Removed public access to `ECPair` constructor, use exported functions `ECPair.fromPrivateKey`, `ECPair.fromWIF`, `ECPair.makeRandom`, or `ECPair.fromPublicKey` (#1070)
In this release we have strived to simplify the API, [using native types](https://github.com/bitcoinjs/bitcoinjs-lib/issues/407) wherevever possible to encourage cross-compatibility with other open source community modules.
The `ecdsa` module has been removed in lieu of using a new ECDSA module (for performance and safety reasons) during the `2.x.y` major release.
Several other cumbersome modules have been removed, with their new independent modules recommended for usage instead for greater modularity in your projects.
-----------------------------
Backward incompatible changes:
__added__
- export `address`, for `address` based [utility functions](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/src/address.js), most compatible, just without `Address` instantiation, see #401, #444
- export `script`, for `script` based [utility functions](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/src/script.js), mostly compatible, just without `Script` instantiation, see #438, #444
- export `ECPair`, a merged replacement for `ECKey`/`ECPubKey`, invalid types will throw via `typeforce`
__changed__
-`address.toOutputScript`, `ECPair.prototype.fromWIF` and `HDNode.prototype.fromBase58` no longer automatically detect the network, `networks.bitcoin` is always assumed unless given.
-`assert` was used for type checking, now replaced by `typeforce`
-`BIP66` compliant strict DER signature validation was added to `ECSignature.fromDER`, changing the exact exception messages slightly, see #448.
-`Transaction.prototype.addInput(hash, ...)`: `hash` could be a string, Transaction or Buffer -> `hash` can now **only** be a `Buffer`.
-`Transaction.prototype.addOutput(scriptPubKey, ...)`: `scriptPubKey ` could be a string, `Address` or a `Buffer` -> `scriptPubKey` can now **only** be a `Buffer`.
-`TransactionBuilder` API unchanged.
__removed__
- export `Address`, `strings` are now used, benchwith no performance loss for most use cases
- export `base58check`, use [`bs58check`](https://github.com/bitcoinjs/bs58check) instead
- export `ecdsa`, use [`ecurve`](https://github.com/cryptocoinjs/ecurve) instead
- export `ECKey`, use new export `ECPair` instead
- export `ECPubKey`, use new export `ECPair` instead
- export `Wallet`, see README.md#complementing-libraries instead
- export `Script`, use new utility export `script` instead (#438 for more information)
-`crypto.HmacSHA256 `, use [node crypto](https://nodejs.org/api/crypto.html) instead
-`crypto.HmacSHA512 `, use [node crypto](https://nodejs.org/api/crypto.html) instead
-`Transaction.prototype.sign`, use `TransactionBuilder.prototype.sign`
-`Transaction.prototype.signInput`, use `TransactionBuilder.prototype.sign`
-`Transaction.prototype.validateInput`, use `Transaction.prototype.hashForSignature` and `ECPair.verify`
-`HDNode.fromBuffer`, use `HDNode.fromBase58` instead
-`HDNode.fromHex`, use `HDNode.fromBase58` instead
-`HDNode.toBuffer`, use `HDNode.prototype.toBase58` instead
-`HDNode.toHex`, use `HDNode.prototype.toBase58` instead
-`networks.*.magic`, see the comment [here](https://github.com/bitcoinjs/bitcoinjs-lib/pull/432/files#r36715792)
-`networks.[viacoin|viacointestnet|gamerscoin|jumbucks|zetacoin]`, import these yourself (see #383/a0e6ee7)
