Add changelog

.github/workflows/changelog.yml

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+name: "Ensure Changelog"
+on:
+  pull_request:
+    # The specific activity types are listed here to include "labeled" and "unlabeled"
+    # (which are not included by default for the "pull_request" trigger).
+    # This is needed to allow skipping enforcement of the changelog in PRs with specific labels,
+    # as defined in the (optional) "skipLabels" property.
+    types: [opened, synchronize, reopened, ready_for_review, labeled, unlabeled]
+
+jobs:
+  # Enforces the update of a changelog file on every pull request 
+  changelog:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: dangoslen/changelog-enforcer@v3

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
+tries to adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+
+## [Unreleased]
+
+### Added
+
+- Started keeping a changelog. Added a changelog file, and added a changelog nagger to CI.
+
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security