Update changelog.md

Added the log for 0.3.0

Author: AvoscanEmile

docs/changelog.md

@@ -10,19 +10,28 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added a description to the project.
 - Created initial `README.md` and added a `LICENSE`.
 
-## [0.0.1] - 2025-June-04
+## [0.1.0] - 2025-June-04
 ### Added
 - Created base folder structure for SoulmateOS with placeholder `.gitkeep` files.
 - Initialized repository with LICENSE and README.
 - Created initial `CHANGELOG.md`, `architecture.md` and `roadmap.md` in `/docs`.
 - Created `01-intro-vision.md` and `02-initial-repository-setup.md` inside `/devlogs`
 
-## [0.0.2] - 2025-June-08
+## [0.2.0] - 2025-June-08
 ### Added
 - Created `installation.sh`, the main script for installing SoulMateOS. Currently takes you from minimal install into a working lightdm login screen and a working qtile desktop.
 - Created `install/README.md` where the installation process is explained.
 - Created `03-failed-awesome-attempt.md` and `04-succesful-qtile-installation.md` inside `/devlogs`.
 ### Changed 
 - Changed `CHANGELOG.md`, `architecture.md` and `roadmap.md` in `/docs` to reflect the transition from AwesomeWM into Qtile.
 ### Removed
-- Removed `.gitkeep` files that were no longer necessary. 
+- Removed `.gitkeep` files that were no longer necessary.
+
+## [0.3.0] - 2025-June-11
+### Added
+- Created `nix-setup.sh`, the script for installing nix multi-user and rofi via nix.
+- Created `05-package-selection.md` and `06-nixmare-of-a-setup.md` inside `/devlogs`.
+### Changed 
+- Changed `changelog.md`, `architecture.md` and `roadmap.md` in `/docs` to reflect the progress of the project.
+- Changed `installation.sh` to call `nix-setup.sh` when needed and to install the relevant packages selected in `05-package-selection.md`. 
+- Changed `/install/README.md` to make the installation process more consistent since while testing I find out caps were a problem.