* Update utils.py
returns individual txt files and subdirectories to getdatasets to allow for training from a directory of text files
* Update training.py
minor tweak to training on raw datasets to detect if a directory is selected, and if so, to load in all the txt files in that directory for training
* Update put-trainer-datasets-here.txt
document
* Minor change
* Use pathlib, sort by natural keys
* Space
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Co-authored-by: oobabooga <112222186+oobabooga@users.noreply.github.com>