Update metadata for 0.4.0 release. Remove template coverage

Author: dbanty

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
 
-## 0.4.0 - Unreleased
+## 0.4.0 - 2020-05-30
 ### Breaking Changes
 - Classes generated to be included within lists will now be named like <ListName>Item. For example, if a property 
     named "statuses" is an array of enum values, previously the `Enum` class declared would be called "Statuses". Now it 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "openapi-python-client"
-version = "0.4.0-rc.1"
+version = "0.4.0"
 description = "Generate modern Python clients from OpenAPI"
 repository = "https://github.com/triaxtec/openapi-python-client"
 license = "MIT"
@@ -76,3 +76,7 @@ line_length = 120
 multi_line_output = 3
 include_trailing_comma = true
 skip = ["tests/test_templates"]
+
+[tool.coverage.run]
+omit = ["openapi_python_client/templates/*"]
+