update changelog

Author: ananya

AUTHORS.md

@@ -41,3 +41,4 @@
 - Adam Anouar <<aanouar@student.ethz.ch>> [@AdamAnouar](https://github.com/AdamAnouar)
 - Joseph Kenny <<kenny@arch.ethz.ch>> [@jckenny59](https://github.com/jckenny59)
 - Panayiotis Papacharalambous <<papacharalambous@arch.ethz.ch>> [@papachap](https://github.com/papachap)
+- Ananya Kango <<kango@arch.ethz.ch>> [@kangoananya](https://github.com/kangoananya)

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Fixed unexpected behavior for method `Plane.is_parallel` for opposite normals.
 
 ### Added
+* Added `trim`, `trimmed`, `change_seam` and `point_at_length` methods to `RhinoCurve` class. 
 
 ### Changed