Filter programming

[jannikrdev]

We'll use code to dynamically create tasks on the fly with the right parameters set in a yaml file, see dynamic DAG's and task groups

[jannikrdev]

Update: for simplicity reasons it makes most sense to cache the results of each step of the cleaning pipeline in a table of a temporary schema, "staging". There, the table from issue #16 will be cached and can be easily retrieved for further analysis.