Bump to 0.5.4, update CHANGELOG for release.

Author: dbanty

CHANGELOG.md

@@ -5,12 +5,12 @@ 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).
 
 
-## 0.5.4 - Unreleased
+## 0.5.4 - 2020-08-29
 ### Additions
-- Added support for octet-stream content type (#116)
+- Support for octet-stream content type (#116)
 - Support for [nullable](https://swagger.io/docs/specification/data-models/data-types/#null) (#99)
-- Union properties defined using oneOf (#98)
-- Added support for lists of strings, integers, floats and booleans (#165). Thanks @Maistho!
+- Union properties can be defined using oneOf (#98)
+- Support for lists of strings, integers, floats and booleans as responses (#165). Thanks @Maistho!
 
 
 ## 0.5.3 - 2020-08-13

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "openapi-python-client"
-version = "0.5.3"
+version = "0.5.4"
 description = "Generate modern Python clients from OpenAPI"
 repository = "https://github.com/triaxtec/openapi-python-client"
 license = "MIT"