[Blog] dask

[noahnovsak]

First blog about dask, focusing on changes made to OWTable.

[markotoplak]

Thanks! I like it a lot! Cool introduction and schematics. This is much better that I could ever imagine doing myself.

Because this work has not been merged into Orange yet, perhaps you could somewhere link to your branch? And then, when merged, we can do a small edit.

[markotoplak]

Also, as @mitjapotocin just notified me, all images need meaningful alt text.