Version 6.0.0 breaks compatibility by removing the old style TableauRestApiConnection classes. Now only TableauServerRest remains, with all examples and the README updated. There are a few changes to method signatures to achieve future-proofing, particularly create_site and update_site which now have an options_dict argument to allow putting any of the multitude of site configuration options, and all the methods which had arguments for specific filters, where the checks have been removed and you just pass a List of any UrlFilter objects you want. This is the final release by the original author, and this GitHub account will be maintained by the wider Tableau Embedded Presales Team after this release.