Add mt_kw.py
Adapt header checking
Remove verify_hours_headers
Remove verify_hours_headers
Remove under_name
Adjust detect_data_rows
Remove data_headers
Remove data_headers
Add under_name
Adjust date column
Remove prepare_time_columns
Remove prepare_time_columns
Remove data_headers
Remove single_column
Add vx_th_date
Use vx_th_date
Remove vx_t_date
Rebuild vx_th_date
Change to duo_date
Change to duo_date