add change log

CHANGELOG.md

@@ -1,5 +1,29 @@
-#  (2019-02-27)
+# Changelog
+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 this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+
+## 1.1.0 - 2019-03-13
+### Added
+- Coswift support generator
+- Support macosx
+- Subroutine should cancel when it's parent cancel.
+-
+### Changed
+
+- Split coobjc to cocore and coobjc, coswift depend on cocore.
+- Drag fishhook in project
+- Yield change to macro defined.
+
+### Fixed
+- Fix custom stack calculate error.
+- Fix batch await
+- Fix c++ compile error
+- Fix coswift bugs.
+
+## 1.0.0 - 2019-02-27
 
 ### Features