message: Update CHANGELOG for fee table changes
diff: ## 0.23.0 (unreleased)
  - @cosmjs/cosmwasm: Rename `CosmWasmClient.postTx` method to `.broadcastTx`.
  +- @cosmjs/cosmwasm: Rename `FeeTable` type to `CosmWasmFeeTable`.
  +- @cosmjs/cosmwasm: `SigningCosmWasmClient` constructor now takes optional
  + arguments `gasPrice` and `gasLimits` instead of `customFees` for easier
  + customization.
  - @cosmjs/cosmwasm: Rename `SigningCosmWasmClient.signAndPost` method to
  `.signAndBroadcast`.
  - @cosmjs/cosmwasm: Use stricter type `Record<string, unknown>` for smart query,
  - @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
  create a strict decoder.
  +- @cosmjs/launchpad: Rename `FeeTable` type to `CosmosFeeTable` and export a new
  + more generic type `FeeTable`.
  +- @cosmjs/launchpad: Add new class `GasPrice`, new helper type `GasLimits` and
  + new helper function `buildFeeTable` for easier handling of gas prices and
  + fees.
  - @cosmjs/launchpad: Rename `CosmosClient.postTx` method to `.broadcastTx`.
  +- @cosmjs/launchpad: `SigningCosmosClient` constructor now takes optional
  + arguments `gasPrice` and `gasLimits` instead of `customFees` for easier
  + customization.
  - @cosmjs/launchpad: Rename `SigningCosmosClient.signAndPost` method to
  `.signAndBroadcast`.
  - @cosmjs/launchpad: Rename `PostTx`-related types to `BroadcastTxResult`,
  `isSearchBySentFromOrToQuery` and `isSearchByTagsQuery`.
  - @cosmjs/launchpad: Change type of `TxsResponse.logs` and
  `BroadcastTxsResponse.logs` to `unknown[]`.
  +- @cosmjs/math: Add `.multiply` method to `Decimal` class.
  - @cosmjs/tendermint-rpc: Make `BroadcastTxCommitResponse.height` non-optional.
  - @cosmjs/tendermint-rpc: Change type of `GenesisResponse.appState` to
  `Record<string, unknown> | undefined`.
  