message: Add missing 0.23 CHANGELOG entries
  See
diff: - @cosmjs/cosmwasm: Rename `CosmWasmClient.postTx` method to `.broadcastTx`.
  - @cosmjs/cosmwasm: Rename `SigningCosmWasmClient.signAndPost` method to
  `.signAndBroadcast`.
  +- @cosmjs/cosmwasm: Use stricter type `Record<string, unknown>` for smart query,
  + init, migrate and handle messages (in `WasmExtension.wasm.queryContractSmart`,
  + `CosmWasmClient.queryContractSmart`, `SigningCosmWasmClient.instantiate`,
  + `SigningCosmWasmClient.migrate`, `SigningCosmWasmClient.execute`).
  - @cosmjs/demo-staking: Remove package and supporting scripts.
  - @cosmjs/encoding: Add `limit` parameter to `Bech32.encode` and `.decode`. The
  new default limit for decoding is infinity (was 90 before). Set it to 90 to
  `BroadcastTxSuccess` and `BroadcastTxFailure` respectively, as well as helper
  functions `isBroadcastTxFailure`, `isBroadcastTxSuccess` and
  `assertIsBroadcastTxSuccess`.
  +- @cosmjs/launchpad: Export `isSearchByIdQuery`, `isSearchByHeightQuery`,
  + `isSearchBySentFromOrToQuery` and `isSearchByTagsQuery`.
  +- @cosmjs/launchpad: Change type of `TxsResponse.logs` and
  + `BroadcastTxsResponse.logs` to `unknown[]`.
  +- @cosmjs/tendermint-rpc: Make `BroadcastTxCommitResponse.height` non-optional.
  +- @cosmjs/tendermint-rpc: Change type of `GenesisResponse.appState` to
  + `Record<string, unknown> | undefined`.
  +- @cosmjs/utils: Add `assertDefined`.
  ## 0.22.2 (2020-08-11)
  