Update Changelog.md

Changelog.md

@@ -2,20 +2,19 @@
 
 All notable changes to this project will be documented in this file.
 
-## [0.21] - 2023-12-14
-- Add a dynamic endpoint for arbitrary playbook execution at `/api/playbook`.
-
-## [0.5] - 2023-12-06
-- Rebuild without any change.
+## [1.0] - 2024-01-03
+The very first major release of LSO is here! :tada: A transparent API for running Ansible playbooks on a remote machine.
 
-## [0.4] - 2023-12-06
-- Rebuild without any change.
+- Bump the API version to 1.0 to reflect breaking changes.
+- Remove obsolete endpoints that were not in use anymore.
+- Remove the interpretation of ansible output into JSON, making it more transparent.
+- Rely on environment variables for the configuration of Ansible, instead of supplying an inline, static `ansible.cfg` file.
+- Don't filter Ansible output keys, this is left up to the consumer of the API instead.
+- Some small updates to linting, code formatting, and documentation.
+- Improve the quickstart in the documentation.
 
-## [0.3] - 2023-12-06
-- Rebuild without any change.
-
-## [0.2] - 2023-12-06
-- Rebuild without any change.
+## [0.21] - 2023-12-14
+- Add a dynamic endpoint for arbitrary playbook execution at `/api/playbook`.
 
 ## [0.1] - 2023-12-06
 - initial skeleton