Update changelog with changes from PR #51

Author: brews

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New unit tests. ([PR #50](https://github.com/ClimateImpactLab/dscim/pull/50), [PR #52](https://github.com/ClimateImpactLab/dscim/pull/52), [@brews](https://github.com/brews))
 ### Changed
 - Updated README with additional technical details. ([PR #49](https://github.com/ClimateImpactLab/dscim/pull/49), [@brews](https://github.com/brews))
+- Removed unused “pulseyrs” and “global_cons” from `convert_old_to_newformat_AR()` and `run_rff()`.  Note this is a breaking change. ([PR #51](https://github.com/ClimateImpactLab/dscim/pull/51), [@davidrzhdu](https://github.com/davidrzhdu), [@kemccusker](https://github.com/kemccusker))
 ### Fixed
 - Fix xarray `.drop()` deprecation. ([PR #54](https://github.com/ClimateImpactLab/dscim/pull/54), [@brews](https://github.com/brews))
 - Fix pathlib.Path/str `TypeError` in `preprocessing.clip_damages()`. ([PR #55](https://github.com/ClimateImpactLab/dscim/pull/55), [@brews](https://github.com/brews))