Updated CHANGELOG.md

Author: interpret-ml

CHANGELOG.md

@@ -4,6 +4,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and the versioning is mostly derived from [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v0.1.9] - 2019-06-14
+### Added
+- Added method debug_mode in develop module.
+- Connected native logging to Python layer.
+- Native libraries can now be in release/debug mode.
+### Fixed
+- Increased system compatibility for C++ code.
+### Changed
+- Debug related methods expose memory info in human readable form.
+- Clean-up of logging levels.
+- Various internal C+ fixes.
+
 ## [v0.1.8] - 2019-06-07
 ### Fixed
 - Fixed calibration issue with EBM.
@@ -94,6 +106,7 @@ and the versioning is mostly derived from [Semantic Versioning](https://semver.o
 - Libraries are statically linked where possible.
 - Code now conforms to Python Black and its associated flake8.
 
+[v0.1.9]: https://github.com/microsoft/interpret/releases/tag/v0.1.9
 [v0.1.8]: https://github.com/microsoft/interpret/releases/tag/v0.1.8
 [v0.1.7]: https://github.com/microsoft/interpret/releases/tag/v0.1.7
 [v0.1.6]: https://github.com/microsoft/interpret/releases/tag/v0.1.6