Add changelog and bump version to 1.1

CHANGELOG.rst

+# 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
+
+### Added
+- Add changelog
+
+### Changed
+- Use poetry as packaging system and replace ``setup.py`` with ``pyproject.toml``.
+
+### Removed
+- Remove support for Django versions below 2.2.
+
+## 1.0.3.post1
+
+### Changed
+- Relicence under Apache License 2.0.
+- Move repository to AlekSIS group on edugit.org.
+
+## 1.0.3.post0
+
+### Fixed
+- Add missing instructions in README.rst.
+
+## 1.0.3
+
+### Fixed
+- Replace ``Context`` objects with plain dictionaries in template tag code.
+
+## 1.0.2
+
+### Fixed
+- Include template tags in package distribution.
+- Fix dictionary lookup in template tags.
+
+## 1.0
+
+### Added
+- Add template tags to readably include JavaScript/CSS files in templates.

pyproject.toml

 [tool.poetry]
 name = "django-any-js"
-version = "1.0.4"
+version = "1.1"
 description = "Include JavaScript/CSS libraries with readable template tags"
 authors = ["Dominik George <dominik.george@teckids.org>"]
 maintainers = ["Dominik George <dominik.george@teckids.org>", "Jonathan Weth <dev@jonathanweth.de>"]