Need help to Backup my code in the versioning format

I want to backup my code in the versioning format in the Appery.io. Is that possible to maintain, if so please guide me?
is that Appery only supports for d3.v3 version becuase I am getting error in the v4 and v5 of d3?
The Angular chart plugin we are using the latest version of it, if so can i get the document related to that stuff?
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