update changelog

Author: Babichev Maxim

changelog.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.6] - 2019-08-08
+### Added
+- Add support laravel cashier #87 @imhuso
+
 ## [3.1.5] - 2019-08-07
 ### Fixed 
 - Fixed math rounding (mantissa) #85 @anthoz69
@@ -380,7 +384,8 @@ 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/3.1.5...HEAD
+[Unreleased]: https://github.com/bavix/laravel-wallet/compare/3.1.6...HEAD
+[3.1.6]: https://github.com/bavix/laravel-wallet/compare/3.1.5...3.1.6
 [3.1.5]: https://github.com/bavix/laravel-wallet/compare/3.1.4...3.1.5
 [3.1.4]: https://github.com/bavix/laravel-wallet/compare/3.1.3...3.1.4
 [3.1.3]: https://github.com/bavix/laravel-wallet/compare/3.1.2...3.1.3