create CHANGELOG and reference v1.0.0

Author: sebmestrallet

Diff for: CHANGELOG.md

@@ -0,0 +1,18 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2023-09-08
+
+### Added
+
+- `cuboid_screw_thread` model
+- `cuboid_torus_with_step` model
+- `in-volume_twist` model
+- `in-volume_knot` model
+- `pipe_helix` model
+- `pipe_helix_7` model
+

Diff for: CITATION.cff

@@ -19,6 +19,7 @@ repository-code: >-
 abstract: >-
   (Very) challenging 3D shapes for polycube-based
   hex-meshing
+version: 1.0.0
 keywords:
   - CAD
   - 3D