Added CHANGELOG

CHANGELOG

+# 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/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.1.0] 2019-10-20
+### Added
+- __main__.py so the module can be used as standalone script.
+- Properties for Law: title, description, guid, link, pubDate
+- Properties Judicature: title, description, pubDate
+
+### Removed
+- Law.parse()
+- Judicature.parse()
+
+### Changed
+
+
+## [1.0.0] 2019-10-19
+ - Initial release