Update Changelog

Author: vmx

CHANGELOG.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- `Device::uuid` function, which returns the UUID of a device.
+
+### Fixed
+- Upgraded `cuda-sys` 0.2 to `cuda-driver-sys` 0.3.
 
 ## [0.1.2] - February 29, 2019
 ### Fixed
@@ -30,4 +35,4 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 [Unreleased]: https://github.com/bheisler/RustaCUDA/compare/0.1.2...HEAD
 [0.1.0]: https://github.com/bheisler/RustaCUDA/compare/5e6d7bd...0.1.0
 [0.1.1]: https://github.com/bheisler/RustaCUDA/compare/0.1.0...0.1.1
-[0.1.2]: https://github.com/bheisler/RustaCUDA/compare/0.1.1...0.1.2
+[0.1.2]: https://github.com/bheisler/RustaCUDA/compare/0.1.1...0.1.2