CHANGELOG.md in stellar-base-0.17.0 vs CHANGELOG.md in stellar-base-0.18.0

@@ -4,10 +4,28 @@
 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/v0.15.0...master)
+## [0.18.0](https://github.com/stellar/ruby-stellar-base/compare/v0.17.0...v0.18.0)
+### Added
+- Update XDR definitions for stellar-core v10.0.0 (introduces Liabilities and other changes to support asset-backed offers as per [CAP-0003 Specification](https://github.com/stellar/stellar-protocol/blob/master/core/cap-0003.md#specification))
+- Add factories for ledger, transaction, operation.
+
+### Changed
+- Use rbnacl instead of rbnacl-libsodium (the latter has been [deprecated](https://github.com/crypto-rb/rbnacl-libsodium/issues/29))
+
+## [0.17.0](https://github.com/stellar/ruby-stellar-base/compare/v0.16.0...v0.17.0)
+### Fixed
+- Rename `Stellar::SignerKey#onetime_signer` helper to `Stellar::SignerKey#hash_x`, add preimage validations
+
+## [0.16.0](https://github.com/stellar/ruby-stellar-base/compare/v0.15.0...v0.16.0)
+### Added
+- Create co-signers conveniently using helpers `ed25519(keypair)`, `preauthorized_transaction(tx)` and `onetime_signer(preimage)` from `Stellar::SignerKey` module
+- Merge two transactions with `Stellar::TransactionEnvelope#merge`
+
+### Fixed
+- Source account overriding in Stellar::Transaction#to_operations
 
 ## [0.15.0](https://github.com/stellar/ruby-stellar-base/compare/v0.14.0...v0.15.0)
 ### Added
 - `Stellar::Operation.change_trust` can accept `Stellar::Asset` instance for `line`