Merge pull request #16 from gitopia/v0.4.0-changelog

chore: release v0.4.0

Author: faza

changelog.md

@@ -0,0 +1,16 @@
+# Changelog
+
+## [v0.4.0] - 2022-02-03
+
+### Fixes
+
+- Fixed the attachments API
+- Use the patched go-git library
+- Optimize the docker build
+
+### Features
+
+- API to fork a repository
+- tree and blob API
+- API to get diff of pull requests
+- Pull request APIs: commits, check and merge