update changelog.md

Author: rez1dent3

changelog.md

@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [4.2.0] - 2020-03-07
+
 ### Added
 - Add laravel 7 support
 
@@ -451,7 +453,8 @@ The operation is now executed in the transaction and updates the new `refund` fi
 - Exceptions: AmountInvalid, BalanceIsEmpty.
 - Models: Transfer, Transaction.
 
-[Unreleased]: https://github.com/bavix/laravel-wallet/compare/4.1.2...HEAD
+[Unreleased]: https://github.com/bavix/laravel-wallet/compare/4.2.0...HEAD
+[4.2.0]: https://github.com/bavix/laravel-wallet/compare/4.1.2...4.2.0
 [4.1.2]: https://github.com/bavix/laravel-wallet/compare/4.1.1...4.1.2
 [4.1.1]: https://github.com/bavix/laravel-wallet/compare/4.1.0...4.1.1
 [4.1.0]: https://github.com/bavix/laravel-wallet/compare/4.0.1...4.1.0