docs: update changelog with changes since kick-off

CHANGELOG.md

@@ -11,16 +11,56 @@ Keep it human-readable, your future self will thank you!
 ## [Unreleased]
 
 ### Added
- - MLflow token authentication
+
+#### Subcommands
+ - Subcommand for training `anemoi-training train`
+ - Subcommand for config generation of configs
+ - Subcommand for mlflow authentication
+ - Subcommand for chechkpoint handling
+
+#### Functionality
+ - Searchpaths for Hydra configs, to enable configs in CWD, `ANEMOI_CONFIG_PATH` env, and `.config/anemoi/training` in addition to package defaults
+ - MlFlow token authentication
+ - Configurable pressure level scaling
+
+#### Continuous Integration / Deployment
+ - Downstream CI to test all dependencies with changes
+ - Changelog Status check
+ - Readthedocs PR builder
+
+#### Miscellaneous
+ - Extended ruff Ruleset
+ - Added Docsig pre-commit hook
+ - `__future__` annotations for typehints
+ - Added Typehints where missing
  - Added Changelog
 
 ### Changed
 
-### Removed
+#### Move to Anemoi Ecosystem
+ - Fixed PyPI packaging
+ - Use of Anemoi models
+ - Use of Anemoi graphs
+ - Adjusted tests to work with new Anemoi ecosystem
+ - Adjusted configs to reasonable common defaults
 
-## [0.1.0] - Initial Release
+#### Functionality
+ - Changed hardware-specific keys from configs to `???` to trigger "missing"
+ - `__len__` of NativeGridDataset
+ - Configurable dropout in attention layer
 
-### Added
-- Initial implementation anemoi-training
+#### Docs
+ - Fixed docstrings
+
+#### Miscellaneous
+ - Moved callbacks into folder to fascilitate future refactor
+ - Adjusted PyPI release infrastructure to common ECMWF workflow
+ - Bumped versions in Pre-commit hooks
+
+### Removed
+ - MlFlow Offline Sync (needs non-pip dependencies)
+ - Specific user configs
 
 <!-- Add Git Diffs for Links above -->
+
+[unreleased]: https://github.com/ecmwf/anemoi-training/compare/x.x.x...HEAD