adding swedish_medical_ner
Hi, what's the current status of this request? It says Changes requested, but I can't see what changes? Hi, it looks like this PR includes changes to other files that `swedish_medical_ner`.

Feel free to remove these changes, or simply create a new PR that only contains the addition of the dataset
Adding the Swedish Medical NER dataset, listed in "Biomedical Datasets - BigScience Workshop 2021"

Code refactored 