update: release notes for v0.41.4 (#8748)

RELEASE_NOTES.md

@@ -1,5 +1,29 @@
-# Cosmos SDK v0.41.3 "Stargate" Release Notes
+# Cosmos SDK v0.41.4 "Stargate" Release Notes
 
-This release fixes a build failure caused by a small API breakage introduced in Tendermint v0.34.7. It is **highly recommended** that all applications using v0.41.2 upgrade to v0.41.3 as soon as possible.
+This release includes the addition of the multisign-batch command, minor bug fixes, and performance improvements.
 
-See the [Cosmos SDK v0.41.3 milestone](https://github.com/cosmos/cosmos-sdk/milestone/39?closed=1) on our issue tracker for details.
+See the [Cosmos SDK v0.41.4 milestone](https://github.com/cosmos/cosmos-sdk/milestone/40?closed=1) on our issue tracker for details.
+
+## multisign-batch command
+
+Multisign-batch command was added and it allows generating multiple multisig transactions by merging batches of signatures.
+
+## Query tx with multisig addresses
+
+Now the rest endpoint allows to query transactions with multisig addresses.
+
+## Improvements
+
+Major performance improvements in store and balance which will speed up genesis verification and initialization.
+
+Genesis now allows 0 coin account balances. This means that genesis initialization will not fail if an address with no balance will be included.
+
+## Bugfixes
+
+The keys migration command (i.e. `keys migrate`) is now functional for offline, multisign, and ledger keys.
+
+Minor bugfixes were included regarding missing errors and fields on some responses.
+
+## Tendermint new release
+
+Tendermint was upgraded to v0.34.8. This release of Tendermint introduces various changes that should make the logs much, much quieter. See [Tendermint's changelog](https://github.com/tendermint/tendermint/blob/v0.34.8/CHANGELOG.md#v0.34.8) for more information.