This issue would replace the current Google Analytics implementation managed through sphinx with a generic tag container. This would allow us to make changes to the google analytics tracking independent of the docs release cycle.
For any docs on the communtity sites, please use the io_sites_gtm.html snippet. For any docs on the cask.co sites, please use the cask_co_gtm.html snippet.
For more information on implementing Google Tag Manager, please see: https://developers.google.com/tag-manager/quickstart