Update changelog

Author: ueco-jb

CHANGELOG.md

@@ -10,8 +10,12 @@ and this project adheres to
 
 - cosmwasm-std: Implement `Decimal{,256}::checked_mul` and
   `Decimal{,256}::checked_pow`.
-- cosmwasm-std: Implement `Sub`/`SubAssign` for `Uint64`.
-- cosmwasm-std: Implement `Mul`/`MulAssign` for `Uint64`.
+- cosmwasm-std: Implement `Sub`/`SubAssign` for
+  `Uint64`/`Uint128`/`Uint256`/`Uint512`.
+- cosmwasm-std: Implement `Mul`/`MulAssign` for
+  `Uint64`/`Uint128`/`Uint256`/`Uint512`.
+- cosmwasm-std: Implement `RemAssign` for
+  `Uint64`/`Uint128`/`Uint256`/`Uint512`.
 - cosmwasm-crypto: Upgrade ed25519-zebra to version 3.
 
 ### Changed