Update CHANGELOG.md

Co-authored-by: Miya Chen <tailingchen@users.noreply.github.com>

CHANGELOG.md

@@ -7,16 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
-## [0.6.2] - TBD
+## [0.6.2] - 2023-03-01
 - `observations` extends to `1800` at `CumulativeTwap.sol` to support extreme circumstance.
 - To better enhance above performance, we introduce binary search mimicked from https://github.com/Uniswap/v3-core/blob/05c10bf/contracts/libraries/Oracle.sol#L153.
 - Remove `CT_NEH` from `CumulativeTwap.sol`. Won't be calculated if so. Simply return latest price at `CachedTwap.sol`.
 - Fix imprecise TWAP calculation when historical data is not enough at `CumulativeTwap.sol`. Won't be calculated if so.
 
-## [0.6.1] - TBD
+## [0.6.1] - 2023-03-01
 - Fix cachedTwap won't be updated when latest updated timestamp not changed
 
-## [0.6.0] - TBD
+## [0.6.0] - 2023-03-01
 ### Added
 - Add `ChainlinkPriceFeedV3.sol` with better error handling when Chainlink is broken.
 - Add `PriceFeedDispatcher.sol`, a proxy layer to fetch Chainlink or Uniswap's price.