Update urls

Update urls for length test splits

Add test splits for lengths

Add length mix to processing script

Add training length mix

Add dataset configs for length datasets

Fix error with missing comma

Add loading and processing length datasets

Add new csv files for training and testing

Update dataset download and usage script

add mixed files

Fix urls for all split

Add new csvs for training, testing and validation models and python script for working with hf datasets lib

Delete sample data

Merge branch 'main' of https://huggingface.co/datasets/semeru/completeformer-masked into main

Add data for training tokenizer

Upload sample_masked_methods.csv

Upload sample_masked_methods.csv

initial commit