Tablecloth restructure

[cmd-mov]

The tablecloth chapter has been split into 3 sections: one on creating, loading and saving datasets, one on working with columns, and one dataset operations. I have also added the list of datasets to the first chapter.

[daslu]

Hi @cmd-mov, I think this is a great idea.

Note that we have made more recent updates to this notebook.

One of them is reading the Chicago bikes data file from the web to make it more self-contained:
https://github.com/scicloj/noj/blob/c3e7ab5/notebooks/noj_book/tablecloth_table_processing.clj#L353
So, we no longer include this data file in the Noj repo.

I think your version still tries to read the file the old way, and that is why it currently fails.

Possibly, there are a few other gaps between the current version of the notebook and the one you used.

We can look into this together when we meet.

[cmd-mov]

Ah, thanks. I was wondering why. I believe I might have worked from an older version of the repo. Let's look at it when we meet indeed.