Add 0.4.0 release notes

Author: shyiko

CHANGELOG.md

@@ -5,7 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/altinity/ice/compare/v0.3.1...master)
+## [Unreleased](https://github.com/altinity/ice/compare/v0.4.0...master)
+
+## [0.4.0](https://github.com/altinity/ice/compare/v0.3.1...v0.4.0)
+
+### Added
+- `name` (catalog name) config option for ice-rest-catalog that enables multiple catalogs share the same etcd/postgresql/etc. instance.
+
+### Fixed
+- `ice scan` failing on a table with `timestamptz` column(s).
+- ice insert: `date` type handling.
 
 ## [0.3.1](https://github.com/altinity/ice/compare/v0.3.0...v0.3.1)