chore: add changelog

.changelog/unreleased/breaking-changes/1311-migrate-cosmwasm-workspace.md

@@ -0,0 +1,3 @@
+- [cosmwasm] Migrate the `cosmwasm` workspace into its own separate repository
+ located at [cosmwasm-ibc](https://github.com/informalsystems/cosmwasm-ibc).
+ ([\#1311](https://github.com/cosmos/ibc-rs/issues/1311))

.changelog/unreleased/breaking-changes/1320-define-host-error-type.md

@@ -1,2 +1,4 @@
-- [ibc-core] Defined a new `HostError` type in ics24 to draw distinction between protocol errors and host errors
+- [ibc-core] Define a new `HostError` type in ICS-24 to draw distinction between
+ protocol errors and host errors. Additionally, rename `ContextError` to
+ `HandlerError` to better reflect its use case.
  ([\1320](https://github.com/cosmos/ibc-rs/issues/1320))

.changelog/unreleased/breaking-changes/1339-merge-packet-error-into-channel-error.md

@@ -1,2 +1,2 @@
 - [ibc-core-channel] Merge `PacketError` type into `ChannelError`
- ([#1339](https://github.com/cosmos/ibc-rs/pull/1343))
+ ([#1339](https://github.com/cosmos/ibc-rs/issues/1339))

.changelog/unreleased/breaking-changes/1346-remove-generic-string-error-variants.md

@@ -1,2 +1,3 @@
-- [ibc-core] Remove `ClientError::Other` variant
+- [ibc] Clean up multi-purpose variants like the `Other` variant and reduce
+ unnecessary `String` allocations in `*Error` enums.
  ([\#1346](https://github.com/cosmos/ibc-rs/issues/1346))

.changelog/unreleased/breaking-changes/270-standardize-error-variants-to-be-less-specific.md

@@ -0,0 +1,3 @@
+- [ibc] Standardize error variants across the codebase to make them less
+ specific and more consistent.
+ ([\#270](https://github.com/cosmos/ibc-rs/issues/270))

.changelog/unreleased/breaking-changes/950-return-DecodingError-when-decoding-Any-to-MsgEnvelope.md

@@ -0,0 +1,2 @@
+- [ibc-core-handler] Return `DecodingError` for `MsgEnvelope` when trying to
+ decode from `Any` ([\#950](https://github.com/cosmos/ibc-rs/issues/950))