All notable changes to this project will be documented in this file.

The changelog format is based on Keep a Changelog.

• [Bug] update to latest catbuffer with Aggregate transaction V3 support.

• [Bug] Add support for Aggregate transaction V3.

• [Bug] 853: Fixed encoding of raw messages in TransferTransaction.

• [Bug] Fix mosaic definition transaction from payload method.

• Bumped AggregateTransaction version to V2. Note that the ability to create or broadcast V1 aggregate transactions has been removed.
• [Bug] Fixed incorrect Merkle hash calculation for aggregate transactions.
• [Bug] Fixed the calculation of embedded transaction (also known as inner aggregate transaction) hashes without padding.

Milestone: Symbol Mainnet

[Bug] #843: Handle transaction meta's timestamp and feeMultiplier when value is undefined.

Milestone: Symbol Mainnet

[Bug] #839: Patch missing meta information to transaction dto.

Milestone: Symbol Mainnet

• [BREAKING CHANGE] The type of value field in AccountMetadataTransaction, MosaicMetadataTransaction, NamespaceMetadataTransaction classes is changed from string to Uint8Array.
• fix: Fixed metadata value non-ascii utf8 encoding issue #834
• fix: Upgraded Node to 12.22.1.
• fix: Upgraded typescript to 4.5.4.
• fix: Upgraded RXJS to 7.4.0.

Milestone: Symbol Mainnet

• fix: replaced instanceof statements. These statements are problematic when npm installs the dependency in multiples modules.
• feat: added mosaic revocation support.

Milestone: Symbol Mainnet

• feat: Multisig multilevel subscription in web listener.
• feat: Added Deployment data to ServerInfo.
• fix: Fixed observable pipe in TransactionService's announce method.
• fix: Allowing plain base32 addresses in rest payloads. Both address formats are supported.
• fix: Cosigning from transaction hash only.
• fix: Transaction signWith method broken into smaller methods.
• fix: Removed unsued dependencies.

Milestone: Symbol Mainnet

• Fixed missing utf-8 dependency issue.
• Fixed UnhandledPromiseRejection issue in http repository.

Milestone: Symbol Mainnet

• Added callback function in websocket listener for client to handle unsolicited websocket close event.
• Release for Symbol mainnet.

Milestone: Catapult-server main(0.10.0.8)

• Fixed NodeVersion schema issue.
• Added onclose event listener to capture unsolicited ws close event.

Milestone: Catapult-server main(0.10.0.7)

• Fixed subnamespaceId generation issue in NamespaceRegistrationTransaction.
• Fixed mosaicRestrictionTransactionService error handling issue.
• Fixed finalizationEpoch issue in the dto model.
• Changed WebSocket listener subscription to use UnresolvedAddress without querying the rest-gateway.

Milestone: Catapult-server main(0.10.0.6)

• Added FromHeight and ToHeight filters in Receipt search endpoint.
• Added optional parameter in websocket listener channels to automatically subscribe multisig account for cosigners.

Milestone: Catapult-server main(0.10.0.5)

• Re track to catapult-server main branch
• All entity versions reset to v1 for Symbol mainnet release
• [BREAKING CHANGE] Finalization proof modle removed messageGroup.schemaVersion and BMTreeSignaure.top
• [BREAKING CHANGE] Removed VotingKeyLinkV1Transaction.
• [BREAKING CHANGE] PrivateTest network type changed from 0x80 to 0xA8.
• Added Node specific property: minFeeMultipler in transactionFees.
• Removed padding buffer in account state serialization.
• Voting key length set to 32 bytes.

Milestone: Catapult-server finality(0.10.0.4)

• [BREAKING CHANGE] Deadline.create requires the configurable epochAdjustment from the network properties. The value can be retrieved using RepositoryFactory.getEpochAdjustment() or calling catapult-rest's network/properties endpoint.
• [BREAKING CHANGE] NetworkCurrency subclasses replaced with Currency objects. You can retrieve the network currencies with RepositoryFactory.getCurrencies().
• [BREAKING CHANGE] SecretLockRepository.getSecretLock has been updated. It now takes the composite hash as parameter.
• [BREAKING CHANGE] Replaced BlockInfo with the new block types: NormalBlockInfo and NemesisImportanceBlockInfo.
• Added FinalizationRepository.
• Added transferMosaicId, fromTransferAmount, toTransferAmount to transaction searches.
• Added CurrencyService to allow loading Network and custom Currency objects from the rest API.
• Added UnlockedAccount endpoint in NodeRepository to check harvester's unlocking status on the selected node.
• Added StateProofService to verify the different states.
• Added serialize() to state objects AccountInfo, MosaicInfo, NamespaceInfo, MultisigAccountInfo, AccountRestrictions, MosaicGlobalRestriction, MosaicAddressRestriction, MetadataEntry, SecretLockInfo, HashLockInfo to generate the state proof hashes.
• Added version field to state objects.
• Added /merkle endpoints to the repositories of the different states which returns the state Merkle-Patricia tree.
• Added stremer() to repositories to simplify PaginationStreamer objects creation.
• Improved search endpoints allowing "empty" criteria in order to paginate over all the objects.
• Listener now accepts address aliases as UnresolvedAddress objects.
• Added V1 and V2 Voting Key transaction support.
• Updated FinalizationProof object with the new SignatureSchema for catapult-server tree testnet/v3.
• Fixed finalization proof schema version compatibility issue.

Milestone: Catapult-server finality(0.10.0.3)

• [BREAKING CHANGE] Updated MetadataRepository replacing old endpoints with new search endpoint.
• [BREAKING CHANGE] Updated ReceiptRepository replacing old endpoints with new search endpoint.
• [BREAKING CHANGE] Updated ChainRepository merging Height and Score into Info object. Added finalized block information.
• [BREAKING CHANGE] Updated RestrictionMosaicRepository replacing old endpoints with new search endpoint.
• [BREAKING CHANGE] Updated RestrictionAccountRepository removed getAccountRestrictionsFromAccounts endpoint.
• [BREAKING CHANGE] Updated TransactionRepository search endpoint. Added fromHeith and toHeight search criteria.
• [BREAKING CHANGE] Updated toDTO method in Message class. Removed payload and type returns only message string in hexadecimal format.
• [BREAKING CHANGE] Updated property names in BlockInfo:
  1. Changed numTransactions to totalTransactionsCount.
  2. Changed numStatements to statementsCount.
  3. Added transactionsCount.
• [BREAKING CHANGE] Removed totalPages and TotalEntries from 'Page' object for all pagination endpoints.
• Added SecretLockRepository and HashLockRepository
• Added support for topic/data payload wrapper in WS Listener allowing users to reuse the connection for different channels.
• Added finalizedBlock WS Listener subscription
• Added symbol-bootstrap integration for automated e2e testing.
• Fixed bug in websocket listener's isOpen() method for injected ws instance.
• Updated message extraction method (internal) which now takes message string (hex) rather than object from rest response payload.

Milestone: Gorilla.1(0.9.6.4)

• [BREAKING CHANGE] Refactored Account, Namespace, Receipt and Metadata endpoints. Added new search endpoints and removed old endpoints.
• [BREAKING CHANGE] Updated encryption / decryption algorithm from AES-CBC to AES-GCM to meet the security standard.
• [BREAKING CHANGE] Updated PersistentDelegatedHarvesting message marker. Also added VRF private key parameter in PersistentDelegatedHarvesting message & transaction creation.
• Added optional parameter TransactionHash in AggregateTransaction.signWith method.
• Updated encoding methods to support emoji in message payload.

Milestone: Gorilla.1(0.9.6.2)

• Changed to use default fetchAPI (node-fetch) in repository construction (not relying on repository factory builders).

Milestone: Gorilla.1(0.9.6.2)

• Added maxVotingKeysPerAccount, minVotingKeyLifetime and maxVotingKeyLifetime in ChainProperties.
• Updated fetch client version to 0.9.4.

Milestone: Gorilla.1(0.9.6.2)

• Fixed symbol-openapi-typescript-fetch-client Typescript 3+ compatibility issue.
• Fixed window.fetch default value issue in RepositoryFactory.

Milestone: Gorilla.1(0.9.6.2)

• [BREAKING CHANGE] Added startPoint and endPoint in VotingKeyLinkTransaction.
• [BREAKING CHANGE] Renamed SupplementalAccountKeys to SupplementalPublicKeys. The new SupplementalPublicKeys has been changed from array type to an object containing: linked, node, vrf and voting key(s).
• [BREAKING CHANGE] Changed to use the SDK's own enums for order, orderBy, blockOrderBy and meklePosition.
• [BREAKING CHANGE] Added TransactionGroup parameter in getTransactionsById which can query unconfirmed and partial transactions now.
• Changed base client library from symbol-openapi-typescript-node-client to symbol-openapi-typescript-fetch-client for better client / brower usability. There is no need to browserify the packages or special webpack processing
• Made Fetch API injectable via RepositoryFactory which works like the injected websocket in Listener.

Milestone: Gorilla.1(0.9.6.1)

• Fixed missing TransactionGroup export issue.
• Added contributors..
• Fixed issues in travis scripts.

Milestone: Gorilla.1(0.9.6.1)

• [BREAKING CHANGE] Model property name changes:

  1. MetadataEntry: senderPublicKey: string => sourceAddress: Address; targetPublicKey: string => targetAddress: Address
  2. MultisigAccountGraphInfo: multisigAccounts => multisigEntries
  3. MultisigAccountInfo: account: PublicAccount => accountAddress: Address; cosignatories: PublicAccount[] => cosignatoryAddresses: Address; multisigAccounts: PublicAccount[] => multisigAddresses: Address[]
  4. BlockInfo / NewBlock: beneficiaryPublicKey: PublicAccount | undefined => beneficiaryAddress: Address | undefined
  5. MosaicId: owner: PublicAccount => ownerAddress: Address
  6. MosaicInfo: owner: PublicAccount => ownerAddress: Address; height => startHeight.
  7. NamespaceInfo: owner: PublicAccount => ownerAddress: Address
  8. ChainProperties: harvestNetworkFeeSinkPublicKey => harvestNetworkFeeSinkAddress
  9. MosaicNetworkProperties: mosaicRentalFeeSinkPublicKey => mosaicRentalFeeSinkAddress
  10. NamespaceNetworkProperties: namespaceRentalFeeSinkPublicKey => namespaceRentalFeeSinkAddress
  11. NetworkProperties: publicKey => nemesisSignerPublicKey
  12. BalanceChangeReceipt: targetPublicAccount: PublicAccount => targetAddress: Address
  13. BalanceTransferReceipt: sender: PublicAccount => senderAddress: Address

• [BREAKING CHANGE] Transaction property name changes:

  1. AccountMetadataTransaction: targetPublicKey: string => targetAddress: UnresolvedAddress
  2. MosaicMetadataTransaction: targetPublicKey: string => targetAddress: UnresolvedAddress
  3. NamespaceMetadataTransaction: targetPublicKey: string => targetAddress: UnresolvedAddress
  4. MultisigAccountModificationTransaction: publicKeyAdditions: PublicAccount[] => addressAdditions: UnresolvedAddress[]; publicKeyDeletions: PublicAccount[] => addressDeletions: UnresolvedAddress[]
  5. AggregateTransactionService: cosignatories: string[] => cosignatories: Address[]

• [BREAKING CHANGE] Address format changed from 25 bytes to 24 bytes. See new address test vector here.

• [BREAKING CHANGE] MosaicId creation (from Nonce) changed from using PublicKey to Address. See new mosaicId test vector here.

• [BREAKING CHANGE] Added 8 bytes (uint64) version field in CosignatureSignedTransaction and AggregateTransactionCosignature with default value 0.

• [BREAKING CHANGE] Removed all transaction get endpoints from AccountHttp and BlockHttp.

• [BREAKING CHANGE] Added TransactionGroup (required) parameter in getTransaction endpoint in TransactionHttp.

• Added Search endpoints to TransactionHttp, BlockHttp, and MosaicHttp.

  Note:

  1. Search endpoints returns pagination payload (Page<t>) rather than raw arraes.
  2. For AggregateTransaction, transaction search endpoint only returns the aggregate wrapper transaction WITHOUT embedded transactions. complete aggregate payload can be get from getTransaction or getTransactionByIds endpoints.

• Added SearchCriteria interfaces for the new search endpoints.

• group filter in TransactionSearchCriteria to be mandatory due to rest endpoint changes.

• Added streamer for the 3 new search endpoints (block, mosaic, transaction) to improve pagination querying.

• Added size in BlockInfo model.

Milestone: Gorilla.1(0.9.5.1)

• [BREAKING CHANGE] Replaced constructor parameter config with url in Listener class. The constructor is now only using a complete websocket url (e.g. http://localhost:3000/ws or ws://localhost:3000/ws) but not rest-gateway url anymore (It will NOT append /ws suffix to the input url).
• [BREAKING CHANGE] RepositoryFactory: Optional constructor parameters has been moved into RepositoryFactoryConfig interface (optional).
• [BREAKING CHANGE] Added websocketInjected (optional) parameter to the RepositoryFactoryConfig interface. RepositoryFactory.createListener() can now take injected websocket instance to create Listener object.
• [BREAKING CHANGE] Added websocketUrl (optional) parameter to the RepositoryFactoryConfig interface. it allows custom websocket url to be used to create the Listener object. By default (not provided), the factory will use rest-gateway url with '/ws' suffix appended (e.g. http://localhost:3000/ws
• [BREAKING CHANGE] Listener.newBlock channel is now returning new object NewBlock rather than sharing with BlockInfo used by rest-gateway payload.
• Added stateHashSubCacheMerkleRoots to BlockInfo.

Milestone: Gorilla.1(0.9.5.1)

• [BREAKING CHANGE] RemotePublicKey has been renamed to LinkedPublicKey in AccountKeyLinkTransaction.
• [BREAKING CHANGE] AccountRestrictionFlags has been split into 3 separate flags: AddressRestrictionFlag, MosaicRestrictionFlag and OperationRestrictionFlag for better compile time and runtime validation.
• [BREAKING CHANGE] Added NamaspaceRepository interface to Listener constructor parameters for resolving alias purpose. Listener object can still be instantiated by using RepositoryFactory.createListener() with no coding change.
• Added signer and signature as optional parameters to the create methods in transaction classes. TransactionMapping.createFromPayload is now including signer and signature.
• Refactored address filter in websocket listener channels which now filters on recipientAddress, targetAccount, signerPublicKey fields in all transaction types. The Listener can filter on unresolved (alias) addresses now.
• Added optional transactionHash parameter in websocket listener channel subscribers which can be used for specific transaction monitoring now.

Milestone: Gorilla.1(0.9.5.1)

• [BREAKING CHANGE] Transaction signing is now using GenerationHashSeed from NodeInfo or NetworkProperties. GenerationHash on Nemesis block (block:1) is NOT used for signing purposes.
• [BREAKING CHANGE] Renamed AccountLinkTransaction to AccountKeyLinkTransaction.
• [BREAKING CHANGE] Renamed networkGenerationHash to networkGenerationHashSeed in NodeInfo.
• [BREAKING CHANGE] replaced linkedPublickKey with supplementalAccountKeys array in AccountInfo.
• Added new transaction VrfKeyLinkTransaction.
• Added new transaction VotingKeyLinkTransaction.
• Added new transaction NodeKeyLinkTransaction.
• Added new properties proofGamma, proofScalar, proofVarificationHash in BlockInfo
• Added new properties harvestNetworkPercentage, harvestNetworkFeeSinkPublicKey in NetworkProperties.
• Added new KeyType: Unset / Linked / VRF / Voting / Node / All.
• Added package shx for cross-platform building purpose.
• Fixed AggregateTransaction.getMaxCosignatures() to return distinct cosignature set.
• Fixed a few documentaion issues.

Milestone: Fushicho.4(RC3 0.9.3.2)

• [BREAKING CHANGE] Stopped NodeJS v8 and v9 support. From this version (v0.18.0) onwards, Symbol-SDK will target on Node v10+.
• [BREAKING CHANGE] Removed Keccac_256 from LockHashAlgorithm (enum index changed).
• [BREAKING CHANGE] Updated enum name HashType to LockHashAlgorithm.
• [BREAKING CHANGE] Updated property name hashType to hashAlgorithm in SecretLockTransaction and SecretProofTransaction.
• [BREAKING CHANGE] Removed redundant argument NetworkType from Transaction.createTransactionHash() and Address.isValidRawAddress().
• [BREAKING CHANGE] Added setMaxFeeForAggregate() for AggregateTransaction. Transaction.setMaxFee() can only be used by standalone transaction objects.
• [BREAKING CHANGE] Refactored SimpleWallet model and wallet private key Encryption / Decryption methods to patch potential security risk.
• Added AccountService to resolve mosaic alias and return namespace name.
• Migrated from TSLint to ESLint. Added Prettier support.
• Removed metadata value size validation (1024 bytes).
• Fixed PublicAccount.verifySignature bug when verify string in hexadecimal format.
• Added check on UInt64.compact() which throw exception on over flow.
• Added Network currency resolver for e2e tests.

Milestone: Fushicho.4(RC3 0.9.3.2)

• Added SimpleWallet.toDTO() method which returns JSON serialized object.
• Applied latest Symbol OpenAPI generated code (v0.8.9).
• Added automated release scripts for Travis.
• Added multiple version spport for TS-Doc.
• Optimised unit tests and improved test coverage.
• Changed internal method getSigningByte to public.
• Removed constant of namespace MaxDepth (default: 3) which can be retrieved from network properties endpoint.
• Fixed Github security alert on minimist package.

Milestone: Fushicho.4(RC3 0.9.3.1)

• Fixed MosaicNonce issue handling signed integer from rest payload.
• [BREAKING CHANGE] Updated NodeTime model to use UInt64.

Milestone: Fushicho.4(RC3 0.9.3.1)

• [BREAKING CHANGE] Added s-part of transaction signature to transaction hash.
• Added numStatements to blockInfo model.
• Fixed mosaicNonce issue in createTransactionFromPayload.
• Improved error handling in WS listener and TransactionService.
• Improved test coverage.

Milestone: Fushicho.4(RC3 0.9.3.1)

• Rebranded nem2-sdk to symbol-sdk. Please be noted the package name changes.
• [BREAKING CHANGE] Changed QueryParameters and TransactionFilter to use deconstructed argument (JSON object) in the constructor.
• Added node/peers endpoint.
• Fixed security issues reported by github.

Milestone: Fushicho.4(RC3 0.9.3.1)

• [BREAKING CHANGE] Changed hashing algorithm to cope catapult-server changes. All Key derivation and signing are now using SHA512. Removed SignSchema so NetworkType is no longer bonded to the schema anymore (sha3 / keccak). This change will affect all existing keypairs / address (derived from public key) and transaction signatures.
• [BREAKING CHANGE] Added new TransactionFilter parameter to AccountHttp which is now support filtering with list of transaction type.
• Added GenerationHash to the payload in node/info endpoint.
• Added enum for block merkle path item positions (left / right) to replace previous number type value (1 / 2).
• Added new BlockService for Transaction and Receipt block merkle proof auditing.
• Added new node type Dual to the existing RoleTypeEnum.
• Added new endpoint node/health in NodeHttp.
• Moved getStorageInfo and getServerInfo from DiagnosticHttp to NodeHttp repository.
• Improved e2e testing by using async / await.
• General legacy code refactoring and cleanup.

Milestone: Fushicho.4(RC3)

• Fixed circular reference issue after removed InnerTransaction class.

Milestone: Fushicho.4(RC3)

• Core 0.9.2.1 compatible. Changed hash algorithm for shared key derivation to HKDF-HMAC-Sha256.
• Removed senderPrivateKey in Persistent Delegation Request Transaction. Instead, it uses an ephemeral key pair and the EphemeralPublicKey is now attached in the PersistentDelegationMessage payload.
• Removed salt encryption and decryption functions which uses HKDF-HMAC-Sha256 instead. This only affects the encrypted payload.
• Added missing export in Infrastructure classes / interfaces.
• Applied latest catbuffer builder codes for ResolutionStatement.
• Updated TransactionType & TransactionVersion enum key name to match catabuffer schema definition.
• Changed signature type for Height from numeric string to UInt64 in Block & Receipt respostiories
• Fixed a few ts lint issues.

Milestone: Fushicho.3

• Fixed http client (OpenAPI client package) does not support ES6 issue.

Milestone: Fushicho.3

• Refactored to replace generated codes by public library package for both catbuffer and OpenAPI Http Client.
• Added unresolved (mosaicId, address) support in MosaicRestrictionTransaction.
• Added toHex() in MosaicNonce class.
• Exposed MultisigAccountGraphInfo class constructor to public.
• Fixed transaction status issue in both Http and Websocket due to schema update.

Milestone: Fushicho.3

• Added basic operations for UInt64 (Add(), Substract()).
• Added RepositoryFactoryHttp which creates concrete http classes in a factory patten.
• Added NetworkType and GenerationHash cache for all Http repositories which reduces the number of rest calls.
• Added static mathod to create SimpleWallet from rest DTO payload.
• Added TransactionType filter in AccountHttp which can be used for filtering account transactions by type.
• Added IntegrationTestHelper which optimised e2e / integration tests by automatically tracking the changes from catapult rest. Also support loading test accounts directly from catapult-bootstrap-server generated nemesis addresses.
• Replaced Records limitation steps (25,50,75,100) with just number input.
• Fixed TrandactionStatus not returning correct error code bug.
• Fixed spread operation issue in SetMaxFee and ResolveAlias which results in missing super class properties bug.
• Fixed epochAdjustment static value not in UTC bug.
• Fixed known issues in catbuffer Typescript Generator over EntityTypeDto and AggregateTransactionBuilder. Aggregate transaction's InnerTransactions and Cosignatures are now in array format (EmbeddedTransactionBuilder and CosignatureBuilder) instead of using Uint8Array.

Milestone: Fushicho.3

• Added epochAdjustment introduced in catapult-server v0.9.1.1 (Fushicho.3)
• Added setMaxFee to Transaction which calculate max transaction fee using feeMultiplier * transaction.size.
• Optimised resolveAlias implementation in transaction using object spread operator.
• Fixed couple of bugs in blockHttp and unit tests

Milestone: Fushicho.2

• Added networkType as an optional paramter in Http abstract to recude the number of requests to the catapult-rest server
• Added resolveAlias in transaction for resolving UnresolvedAddress and UnresolvedMosaic inside a transaction.
• Added TransactionService class.
• Added resolveAlias service in TransactionService which resolves alias(es) in transaction(s) from block ResolutionStatement.
• Consolicated transaction announcement and websocket confirmed listener into one service call in TransactionService.
• Consolidated AggregateBonded tranaction announcement (aggregateBonded + lockFund) into one service call in TransactionService.

Milestone: Fushicho.2

• Applied latest Fushicho2 schema changes to both transaction serialization and http client codes.
• Added addCosignatures method for filling cosignatures offline.
• Added compare function in UInt64 class for unsigned 64 bytes numbers comparison.

Milestone: Fushicho.1

• Added Address.isValidAddress for plain address string validation.
• Added Address filter in transaction status websocket listener channel.
• Changed MetadataTransactionService return type from Transaction to Union types.
• Made decodeHex method and EmptyAlias class public.
• Fixed const network type used in AliasToRecipient method.
• Fixed SecretLock and SecretProof transaction not using UnresolvedAddress issue.
• Fixed Size method issues for transactions.
• Fixed other JSDoc issues.

Milestone: Fushicho.1

• Fixed MetadataTransactionSercie value delta issue.

Milestone: Fushicho.1

• Fixed Address alias deserialization issue from catapult-rest dto payload.
• Fixed MosaicSupplyChangeTransaction schema mismatch issue.

Milestone: Fushicho.1

• Added Receipt serializer & hash generator for auditing receipt merkle proof.
• Added Unresolved (NamespaceId) support on MosaicRestriction and MosaicMetadata transactions.
• Fixed Mosaic array ordering in TransferTransaction.
• Fixed issues in PersistentDelegationRequestTransaction.
• Other small fixes from community feedbacks.

Milestone: Fushicho.1

• Added KeyGenerator class for generating UInt64 Keys from string.
• Fixed MosaicAmountView issue. Now return observable of array.
• Optimised Account restriction endpoints by returning simple payload.
• Fixed http repository error handling issues.
• Fixed bugs in Alias interface.
• Fixed MosaicId significant byte not detected properly in TransactionPayload.
• Fixed only PRIVATE_TEST network type allowed in NetworkTypeHttp.
• Applied latest OpenAPI doc (v0.7.19).
• Changed SignedTransaction class constructor to public.
• Changed MosaicRestrictionKey format to be Hexadecimal.
• Other small fixes.

Milestone: Elephant.3 / Fuschicho.1

• Added Metadata rest api endpoints and DTOs
• Added MosaicRestriction rest api endpoints and DTOs
• Added MetadataTransactionService which eases the meta data transaction creation without knowing previous meta data values
• Added MosaicRestrictionTransactionService which eases the mosaic restriction transaction creation without knowing previous restriction details.
• Changed MetadataTransaction and Metadata state value to use raw string (utf8 encoding).
• Fixed Namespace/Names endpoint issue
• Fixed Mosaic endpoint issue
• Improved unit and e2e tests

Milestone: Elephant.3

• Added new alias transaction PersistentDelegationRequestTransaction which extends TransferTransaction to send special message to server for persistent delegation harvesting unlock request.
• Added new message type PersistentHarvestingDelegationMessage
• Fixed websorket listener notitification issue when cosignatory added through MultisigModifictionTransaction.
• Changed value parameter in MetadataTransactions from Uint8Array to string (utf8 encoding)
• Added utf8ToUint8 and uint8ToUtf8 converters for above changes
• Made previousRestrictionValue optional in MosaicAddressRestrictionTransaction
• Made referenceMosaicId optional in MosaicGlobalRestrictionTransaction
• Made EncryptedPrivateKey class public
• Made createFromRawAddress in Address class public
• Fixed a few JSDoc issues
• Fixed NPM audit vulnerabilities

Milestone: Elephant.3

• Added Metadata Transactions (Account, Mosaic and Namespace).
• Added new account restriction type to support Outgoing addresses and transaction types.
• catbuffer builder codes fully implemented. Flatbuffer codes removed.
• Models and services updated to be compatible with latest server (milestone Elephant: patch-3) schema updates.
• Refactored Uint64 to support UInt64 to/from: numeric/hex string.
• Refactored Signature Schema to support both NIS1 and Catapult. Network idendifier is now used to identify Signature Schema on model level. PrivateKey reversal has been removed for NIS1 schema.
• Added new Namespace Pruned receipt type.
• Added new static method addTransactions to AggregateTransction to support offline embedded transactions' manipulation.
• Mosaic definition / info model refactored with MosaicProperties removed.
• Various bugs fixed in http repositories.
• Various bugs fixed in model and core components

Milestone: Elephant

• Added Mosaic Restriction (New models and transactions)
• Fixed RXJS compatibility issue (after run npm update)
• Fixed signTransactionGivenSignatures signature not verified issue
• Fixed version texts in Readme.md

Milestone: Elephant

• Added SignSchema to make KeyPair generation compatible with either of Catapult and NIS.
• Added SignSchema with KECCAK_REVERSED_KEY and SHA3. The SDK by default uses SHA3 which is the Catapult signature schema.
• Fixed transaction versions back to version 1
• Added signTransactionGivenSignatures to cope with off chain aggregated complete transaction co signing.

Milestone: Dragon

• Added export for Sha3Hasher
• Added export for nacl_catapult
• Added changelog milestone attribution

Milestone: Dragon

• Fixed null mosaic property in MosaicHttp
• Added NodeHttp
• Fixed Uint8 conversions (control char added)
• Fixed ResolutionStatementDTO in exports

Milestone: Dragon

• Removed nem2-library dependency
• Added infrastructure/model/ with DTOs
• Added infrastructure/api with APIs
• Added infrastructure/buffers and infrastructure/schemas

Milestone: Dragon

• Fixed alias and modification type field names in Http

Milestone: Dragon

• Added 'Receipt'
• Added 'generationHash' to transaction.sign(...) to prevent transactions from being replayed on different networks by prepending the network generation hash to transaction data prior to signing and verifying.
• Added 'recipient' (unresolved address) field to SecretProofTransaction.
• BlockChainHttp routes into 3 routes (Block, Chain, Diagnostic).
• New endpoints
  1. AccountHttp: getAccountsNames(accountIds: Address[]): Observable<AccountNames[]>;
  2. MosaicHttp: getMosaicsNames(mosaicIds: MosaicId[]): Observable<MosaicNames[]>;
• Updated Dto models from latest rest swagger doc.
• Fixed / updated e2e tests.
• Removed Mosaic Levy property from both model and transaction.

Milestone: Cow

• Version lock for cow compatibility
• Fixed #150, AccountHttp.transactions outputs aggregate transactions supplementary data

Milestone: Cow

• Fixed #125, maxFee DTO value errors with in-aggregate MosaicSupplyChange and HashLock transactions

Milestone: Cow

• Fixed #117, Typo in AddressAliasTransaction and MosaicAliasTransaction comments
• Fixed several typos in documentation
• Fixed CreateTransactionFromDTO to allow message to be undefined
• Added transaction/EncryptedMessage
• Added QueryParams.order order parameter

Milestone: Cow

• Added Transaction.maxFee optional property in create() methods. (fixes #53)
• Added service/AggregateTransactionService with isComplete() validates cosigners (fixes #4)
• Fixed issue in createFromDTO with JSON format (fixes #107)
• Added model/transaction/EncryptedMessage for encrypted message payloads
• Fixed MosaicProperties to make duration optional (fixes #109)
• Added service/AggregateTransactionService with validateCosignatories for completeness check (fixes #4)

Milestone: Cow

• Added TransactionMapping (fixes #56 )
• Added CreateTransactionFromPayload (fixes #56 )
• Added SerializeTransactionToJSON
• Added several toDTO() methods for serialization (fixes #56 )
• Added multisigAccountAdded in Listener
• Added accountAddedToMultisig in Listener

• Todo

Milestone: Cow

• Fixed NetworkCurrencyMosaic, NetworkHarvestMosaic
• Added exposed UInt64.fromHex and UInt64.toHex
• Added MosaicId.createFromNonce
• Added MosaicNonce, MosaicNonce.createRandom
• Fixed AliasDTO.mosaicId to be UInt64
• Added nem2-library@v0.9.8 version update (cow compatibility)
• Added cow network update base compatibility
• Added AliasTransaction, AddressAliasTransaction, MosaicAliasTransaction
• Changed MosaicDefinition to hold MosaicNonce
• Changed SecretLock transaction to work with Sha3_256 instead of Sha3_512
• Added delegated harvesting
• Fixed #38: error message for aggregate as inner tx
• Added TransferTransaction.recipient NamespaceId argument type

Milestone: Cow

• added replyGiven in Transaction model
• several linter fixes

Milestone: Cow

• update rxjs to v6
• use observableFrom

Milestone: Alpaca

• data signatures
• nodejs version 10 updates

Milestone: Alpaca

• Initial code release.