message: [skip ci] Add CHANGELOG entry
diff: @@ -67,6 +67,12 @@ and this project adheres to
  lexicographical ordering as implemented by `Vec<u8>`.
  - cosmwasm-std: Implement `PartialOrd` and `Ord` for `Addr` using the same
  lexicographical ordering as implemented by `String`.
  +- cosmwasm-std: Added new `WasmMsg::UpdateAdmin` variant that allows an admin
  + contract (eg. multisig) to set another admin ([#900])
  +- cosmwasm-std: Added new `WasmMsg::UpdateAdmin` variant that allows an admin
  + contract (eg. multisig) to set another admin ([#900])
  +- cosmwasm-std: Add optional `admin` field to `WasmMsg::Instantiate` to allow a
  + contract to be full admin (able to migrate) a contract it created
  [#692]: https://github.com/CosmWasm/cosmwasm/issues/692
  [#706]: https://github.com/CosmWasm/cosmwasm/pull/706
  @@ -80,6 +86,7 @@ and this project adheres to
  [#796]: https://github.com/CosmWasm/cosmwasm/pull/796
  [#802]: https://github.com/CosmWasm/cosmwasm/pull/802
  [#860]: https://github.com/CosmWasm/cosmwasm/pull/860
  +[#900]: https://github.com/CosmWasm/cosmwasm/pull/900
  ### Changed
  