docs(changes): + changelog with initial release

Author: TomMonks

CHANGELOG.md

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+# 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). Dates formatted as YYYY-MM-DD as per [ISO standard](https://www.iso.org/iso-8601-date-and-time-format.html).
+
+Consistent identifier (represents all versions, resolves to latest): 
+
+## :seedling: [v0.1.0 - 2025-02-08]() 
+
+### Added
+
+* Repository essentials: CHANGELOG, CITATION, `binder/environment.yml`
+* `automated_reps`: full implementation of Hoad et al. (2010) "replications algorithm" with practical examples
+* Flow diagram describing algorithm
+* Imported and modified local package `callcentresim` from my other repository [https://github.com/pythonhealthdatascience/intro-open-sim](https://github.com/pythonhealthdatascience/intro-open-sim).
+