Hi, is there any way to get documentation of dagster concepts pre-1.0 please? I'm trying to understand the structure of a legacy project and there isn't much on the actual website about 0.15.9... Presets, solids, composite solids, repository, etc...

The dagster docs are versioned. You can see the

0.15.9

docs here: https://docs.dagster.io/0.15.9/getting-started