Update EMDAT VARNAMES for version 2023

[simonameiler]

Work in progress!

Update the EMDAT variables names to meet the EMDAT data structure criteria of the year 2023

to do:

• check and update all functions which use VARNAMES_EMDAT

Changes proposed in this PR:

• updated VARNAMES_EMDAT dictionary with most recent variables (2023)

This PR fixes #690

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[peanutfun]

To make sure that all key-value pairs here are exactly the same, you could do something like this:

VARNAMES_EMDAT_2023 = ["Dis No", "Year", ...]  # List every variable only once
VARNAMES_EMDAT = {
    2018: {...},
    2020: {...},
    2023: dict(zip(VARNAMES_EMDAT_2023, VARNAMES_EMDAT_2023)),
}

[emanuel-schmid]

🤔 Don't know. With the current change it is at least uniform. After introducing VARNAMES_EMDAT_2023 it's partly less redundant but loses uniformity. Which looks like an increase of entropy to me. 😁
Imho we should keep it uniform or get rid of all the redundancy when we start in this direction. E.g. by making a dictionary for only the values that are different from the keys.

[peanutfun]

I very much like your last suggestion! Let's get back to this when the actual issue is resolved ✌️

[emanuel-schmid]

After manually checking the tutorial, I leave it as it is for now. But the module should be refactored at some point: #708