Coda Sync is freely available on Github
Requirements
Coda has a dependency to com.unity.editorcoroutines package that will be automatically installed if not already installed in your project.
Using Package Manager
In the package Manager Window (Window/Package Manager) click on the little plus sign (+) on the top left corner.
Select "Add package from Git URL" and type https://github.com/Pamcha/CodaSync.git.
The package should then appear in the Package list 🤞 allowing you to import the sample data in your project
Using Git and Manifest.json
Find the manifest.json file in the Packages folder of your project and add a line to dependencies field.
"com.pamcha.codasync": "https://github.com/Pamcha/CodaSync.git" Back in Unity, the package should be automatically be installed.
You can check in the Packages folder and look for Coda Sync there. The Editor Coroutines package should also be automatically installed (or the console will display some error messages).