CHANGELOG.md in stellar-base-0.9.0 vs CHANGELOG.md in stellar-base-0.10.0

- old
+ new
@@ -4,10 +4,13 @@
 file.  This project adheres to [Semantic Versioning](http://semver.org/).
 
 As this project is pre 1.0, breaking changes may happen for minor version
 bumps.  A breaking change will get clearly notified in this log.
 
-## [unreleased](https://github.com/stellar/ruby-stellar-base/compare/v0.9.0...master)
+## [unreleased](https://github.com/stellar/ruby-stellar-base/compare/v0.10.0...master)
+## [0.10.0](https://github.com/stellar/ruby-stellar-base/compare/v0.0.0...v0.10.0)
+
+- Added memo helpers to `Stellar::Transaction.for_account`, allowing any operation builder (such as `Stellar::Transaction.payment) to provide a custom memo using the `:memo` attribute.  
 
 ## [0.9.0](https://github.com/stellar/ruby-stellar-base/compare/v0.8.0...v0.9.0)
 
 ### Changed
 - XDR Definitions have been updated to stellar-core commit eed89649c2060b8e9dacffe2cec4e8b258b32416