Merge pull request #17 from alviezhang/feature/add_changelog

Add changelog

CHANGELOG.md

@@ -0,0 +1,20 @@
+# 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/),
+
+## [1.0.post1] - 2020-03-11
+### Changed
+- Fix import aftership problem [#15](https://github.com/AfterShip/aftership-sdk-python/issues/15).
+
+## [1.0] - 2020-03-10
+### Added
+- Python 3.5+ support.
+
+### Changed
+- This package is not compatible with previous releases.
+
+### Removed
+- Python 2.X support.
+
+[1.0]: https://github.com/AfterShip/aftership-sdk-python/releases/tag/1.0