chore: v0.45.2 Release Notes (cosmos#11546)

* chore: v0.45.2 Release Notes

* update changelog

CHANGELOG.md

@@ -38,6 +38,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+## [v0.45.2](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.2) - 2022-04-05
+
 ### Features
 
 * (tx) [#\11533](https://github.com/cosmos/cosmos-sdk/pull/11533) Register [`EIP191`](https://eips.ethereum.org/EIPS/eip-191) as an available `SignMode` for chains to use.

RELEASE_NOTES.md

@@ -1,14 +1,21 @@
-# Cosmos SDK v0.45.0 Release Notes
+# Cosmos SDK v0.45.2 Release Notes
 
 This release introduces bug fixes and improvements on the Cosmos SDK v0.45 series:
 
-Highlights
-+ Added the missing `iavl-cache-size` config parameter parsing to set a desired IAVL cache size. The default value is way to small for big chains, and causes OOM failures.
-+ Added a check in `x/upgrade` module's `BeginBlock` preventing accidental binary downgrades
-+ Fix: the `/cosmos/tx/v1beta1/txs/{hash}` endpoint returns correct return code (404) for a non existing tx.
+Highlights:
 
-See the [Cosmos SDK v0.45.1  Changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.45.1/CHANGELOG.md) for the exhaustive list of all changes and check other fixes in 0.45.x release series.
-
-**Full Diff**: https://github.com/cosmos/cosmos-sdk/compare/v0.45.0...v0.45.1
+- Add hooks to allow modules to add things to state-sync. Please see [PR #10961](https://github.com/cosmos/cosmos-sdk/pull/10961) for more information.
+- Register [`EIP191`](https://eips.ethereum.org/EIPS/eip-191) as an available `SignMode` for chains to use. Please note that in v0.45.2, the Cosmos SDK does **not** support EIP-191 out of the box. But if your chain wants to integrate EIP-191, it's possible to do so by passing a `TxConfig` with your own sign mode handler which implements EIP-191, using the new provided `authtx.NewTxConfigWithHandler` function.
+- Add a new `rollback` CLI command to perform a state rollback by one block. Read more in [PR #11179](https://github.com/cosmos/cosmos-sdk/pull/11179).
+- Some new queries were added:
+  - x/authz: `GrantsByGrantee` to query grants by grantee,
+  - x/bank: `SpendableBalances` to query an account's total (paginated) spendable balances,
+  - TxService: `GetBlockWithTxs` to fetch a block along with all its transactions, decoded.
+- Some bug fixes, such as:
+  - Update the prune `everything` strategy to store the last two heights.
+  - Fix data race in store trace component.
+  - Fix cgo secp signature verification and update libscep256k1 library.
 
+See the [Cosmos SDK v0.45.2 Changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.45.2/CHANGELOG.md) for the exhaustive list of all changes and check other fixes in the 0.45.x release series.
 
+**Full Commit History**: https://github.com/cosmos/cosmos-sdk/compare/v0.45.1...v0.45.2