Get the latest Data Addon on GitHub
[Direct Download Link]

Workflow

When fixing bugs, adding assets, etc., take the latest linked file (if one exists), load it together with the current Tamriel_Data.esm, merge your assets to the esp, edit whatever is necessary, then commit changes to GitHub.
Do not include an edited Tamriel_Data.esm/esp! This is strictly for merging our changes!
Please add new merged books into the book index.
Also, it should be encouraged to use test cells when merging assets, to make sure they play well in-game. coc "T_Test_TR"

On hold until the release of Tamriel Data version 9, which can be downloaded here:

SD: Download

HD: Download

Loose files: Github

*Make sure to update the credits and changelog when merging assets*

Old Addon found here: https://www.tamriel-rebuilt.org/releasefiles/tamrieldata-tr-addon-4266