chore: v0.42.7 release notes & changelog (#9661)

* chore: v0.42.7 release notes & changelog

* Add ibc

CHANGELOG.md

@@ -36,6 +36,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## Unreleased
 
+## [v0.42.7](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.42.7) - 2021-07-09
+
 ### Improvements
 
 * (baseapp) [\#9578](https://github.com/cosmos/cosmos-sdk/pull/9578) Return `Baseapp`'s `trace` value for logging error stack traces.

RELEASE_NOTES.md

@@ -1,22 +1,10 @@
-# Cosmos SDK v0.42.6 "Stargate" Release Notes
+# Cosmos SDK v0.42.7 "Stargate" Release Notes
 
 This release includes various minor bugfixes and improvments, including:
 
-- x/bank's InitGenesis optimization, which should significantly decrease genesis initialization time,
-- bump Tendermint to v0.34.11 to fix state sync issues,
-- add `cosmos_sdk_version` to `node_info` to be able to query the SDK version used by a node,
-- IBC bugfixes and improvements (see below for more info),
-- new fields on `sdk.Context` (see below for more info).
+- a x/capability initialization fix, which fixes the consensus error when using statesync,
+- CLI improvements such as fixing the `{appd} keys parse` subcommand and a better user error when `--chain-id` is not passed in the `{appd} tx multisign` subcommand,
+- add a new `Trace()` method on BaseApp to return the `trace` value for logging error stack traces,
+- IBC fixes for the `Transfer` event and telemetry metrics.
 
-See the [Cosmos SDK v0.42.6 milestone](https://github.com/cosmos/cosmos-sdk/milestone/45?closed=1) on our issue tracker for the exhaustive list of all changes.
-
-### IBC Bugfixes and Improvements
-
-The `[appd] query ibc client header` is fixed and allows querying by height for the header and node-state command. This allows easier venerability of which IBC tokens belong to which chains. IBC's ExportGenesis now exports all fields, including previously missing `NextClientSequence`, `NextConnectionSequence` and `NextChannelSequence`. A new subcommand `[appd] query ibc-transfer escrow-address` has been added to get the escrow address for a channel; it can be used to then query balance of escrowed tokens.
-
-### New Fields on `sdk.Context`
-
-Two fields have been added on `sdk.Context`:
-
-- `ctx.HeaderHash` adds the current block header hash obtained during abci.RequestBeginBlock to the Context,
-- `ctx.GasMeter().RefundGas(<amount>, <description>)` adds support for refunding gas directly to the gas meter.
+See the [Cosmos SDK v0.42.7 milestone](https://github.com/cosmos/cosmos-sdk/milestone/48?closed=1) on our issue tracker for the exhaustive list of all changes.