Export improvements

[savente93]

Issue addressed

Fixes #657

Explanation

• I ended up not allowing multiple instances of time tuples because that would end up either overwriting the previous exports, or changing the file names, which I didn't want to do.
• Other changes are based on the discussion Hélène and I had.

Checklist

• Updated tests or added new tests
• Branch is up to date with main
• Tests & pre-commit hooks pass
• Updated documentation if needed
• Updated changelog.rst if needed

Additional Notes (optional)

[hboisgon]

Almost there @savente93, thanks for looking into it!
I think the multiple -t options is actually implemented (it was support multiple sources which at the time were using -t instead of -s now :) )
What I miss is passing the extra arguments from config and for you to check if the config is properly parsed by your function still with the changes implemented

[savente93]

What I miss is passing the extra arguments from config and for you to check if the config is properly parsed by your function still with the changes implemented

Sorry I don't understand what you are asking here, could you rephrase it for me? other than that, all of the comments should be resolved now.

[hboisgon]

Looks all good :) I tried to explain better what I meant but your solution works too.