message: CHANGELOG entry for new `Timestamp` methods
diff: @@ -11,6 +11,7 @@ and this project adheres to
  - cosmwasm-std: Add `Timestamp::minus_seconds` and `::minus_nanos`.
  - cosmwasm-std: Add `Addr::as_bytes`
  - cosmwasm-std: Implement `std::ops::Sub` for `math::Decimal`
  +- cosmwasm-std: Add `Timestamp::seconds` and `Timestamp::subsec_nanos`.
  ## [0.14.0] - 2021-05-03
  