v0.96.1

• Updated types for latest Kusama
• Add filterRecords (in addition to findRecord) on submittable results
• Various ABI v2 contract fixes
• Update derive for elections (incl. RunnersUp) and heartbeat derives (with blocks & messages)
• Add vesting totals & locked breakdowns to derive balances
• Update council derives for the latest Substrate master support (with constants)
• Derive cleanups, including sharing of instances between the API and internal to derives

v0.95.2

• Support Extrinsic V4 with additional signature indicator (Latest Polkadot/Substrate/Kusama)
• Adjust subscription update checks to avoid duplicated data updates
• Support Metadata V8 (exposes per-module decl_error definitions)
• Support next generation contracts ABI (with additional type definitions)
• Support for BTreeMap<K, V> types and definitions
• All latest Polkadot & Substrate types (as per master branches)
• Breaking change Call.injectMethods is moved to Call.injectMetadata to align with Events (This should not be used externally, however mentioned as breaking here)

v0.94.1

• Add handling of Result<Ok, Error> definitions
• Adjust API cloning now takes RPC filters from source into account
• Simplification of isPedantic checks and less overhead on StorageData types
• Cleanups and fixes around RPC and derive type definitions
• Fix derive.imOnline.receivedHeatbeats to query via indexes
• Adjustment of api.derive.elections.{approvalsOf|approvalsOfAt} to allow ss58 address input
• Cleanup Enum .eq handling to be more exhaustive
• Add documentation for custom extrinsic formats (advanced chains)
• Update to latest substrate master metadata

v0.93.1

• Support for Kusama CC2
• In extrinsic submission, use rpc.account.nextIndex to retrieve the nonce when available
• For TypeScript users api.query.*.* is now properly typed for default Substrate calls, i.e. api.query.balances.freeBalance(...) will return a Balance type. Additionally the api.queryMulti and .multi on queries not allow generic type params.
• Add api.rpc.accounts.nextIndex, api.rpc.contracts.call and api.rpc.rpc.methods calls. Optional calls (such as account/contracts) is decorated based on the results from rpc.methods, so they don't show up on nodes where they are not active.
• Updated types to support the latest Polkadot/Substrate master changes
• Support recursive type registration (self-referencing via Box) in addition to better sanitation of user-defined-types
• Documentation and example updates (thanks mostly to contributions)

v0.92.1

• The API now correctly sets the ss58 prefix as retrieved from the chain properties via ss58Format
• Bump to @polkadot/util 1.4.1, removing use of ExtError
• The Keyring from @polkadot/keyring is now exposed on the API as well. You can do import { Keyring } from '@polkadot/api' - this alleviates the need for extra dependencies (apart from @polkadot/api), and since the keyring is critical for signing operations, aligns everything in one bundle
• Support the latest Polkadot & Substrate master branches (incl. metadata updates)
• Getting started documentation has been made available

v0.91.1

• This release was focussed on stability, with a number of cleanups and bug-fixes
• Adjustments for Substrate 1.x chain detection (with auto-types) and Substrate 2.x support has been extended with all latest types
• The getRuntimeVersion and subscribeRuntimeVersion RPCs are now only available on the rpc.state.* endpoints. This aligns with the Substrate implementation.
• The author_insertKey RPC's last argument publicKey is now required, as to reflect Substrate implementation.
• Support for extrinsics with versions that is not in the base Substrate implementation (V1-V3) can now be done by providing an implementation for ExtrinsicUnknown
• Redeemed balance calculation if api.derive now returns the correct values again (bugfix)
  added the yarn chain:info [--ws URL] utility to extract a calls-only metadata version
• Missing types are now logged via a console.warn, not via .error
• Extrinsic, ExtrinsicPayload & SignerPayload is registered in the type registry and can be overriden now

v0.90.1

Support for Kusama with Polkadot 0.5.0 and current pre-release Substrate 2.x networks. (Along with existing Substrate 1.x-era networks)

When upgrading, take care of looking at the CHANGELOG and UPGRADING guides.