Processes sort and order only working for "small extents"

[ValentinaHutter]

As we are using Dask, the processes that are applied to a dataset are not allow to load any values of the datasets.
The only two processes that still load data are the sort and the order processes, so when a large dataset is selected and these processes are applied, to many values will be loaded and the memory usage will be too high.
These processes need to be updated without loading any values.

[clausmichele]

Do you have a use case where you use sort and/or order ? I've never used them yet.

[ValentinaHutter]

No, there is no use case where we need sort or order yet, I just implemented these two before, but they need to be updated again.

[ValentinaHutter]

Updates of the two processes are now in PR: #54

[sophieherrmann]

This was fixed with #54