docs(changelog)

CHANGELOG.md

@@ -0,0 +1,21 @@
+# Changelog
+
+All notable changes to this repo are documented in this file. The Graphistry server is tracked in the main [Graphistry major release history documentation](https://graphistry.zendesk.com/hc/en-us/articles/360033184174-Enterprise-Release-List-Downloads).
+
+The changelog format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html) and all PyGraphistry-specific breaking changes are explictly noted here.
+
+## [Development]
+
+### Added
+
+* ReadTheDocs site: [https://graphistry-admin-docs.readthedocs.io/](https://graphistry-admin-docs.readthedocs.io/)
+
+### Changed
+
+* Reorganized documentation into thematic areas
+
+### Infra
+
+* Sphinx port
+* CI