Add CHANGELOG entry

CHANGELOG.md

@@ -9,7 +9,8 @@ and this project adheres to
 ### Added
 
 - cosmwasm-crypto: Add `ed25519_batch_verify`, EdDSA ed25519 batch signature
-  verification scheme for Tendermint signatures and public keys formats. ([#788])
+  verification scheme for Tendermint signatures and public keys formats.
+  ([#788])
 - cosmwasm-crypto: Add `ed25519_verify`, EdDSA ed25519 signature verification
   scheme for Tendermint signature and public key formats. ([#771])
 - cosmwasm-crypto: New crypto-related crate. Add `secp256k1_verify`, ECDSA
@@ -43,6 +44,12 @@ and this project adheres to
   (eg. multisig) be the admin and migrate another contract ([#768])
 - cosmwasm-std: Added optional `system` entry point that can only be called by
   native (blockchain) modules to expose admin functionality if desired. ([#793])
+- cosmwasm-std: Add extra field `submessages` to `Response`, such that you can
+  get a callback from these messages after their execution (success or failure).
+  ([#796])
+- cosmwasm-std: Added `subcall_response` entry point that will receive all
+  callbacks from submessages dispatched by this contract. This is only required
+  if contract returns "submessages" (above). ([#796])
 
 [#692]: https://github.com/CosmWasm/cosmwasm/issues/692
 [#706]: https://github.com/CosmWasm/cosmwasm/pull/706
@@ -52,6 +59,7 @@ and this project adheres to
 [#716]: https://github.com/CosmWasm/cosmwasm/pull/716
 [#768]: https://github.com/CosmWasm/cosmwasm/pull/768
 [#793]: https://github.com/CosmWasm/cosmwasm/pull/793
+[#796]: https://github.com/CosmWasm/cosmwasm/pull/796
 
 ### Changed