When using odml-terminologies, e.g., https://github.com/G-Node/odml-terminologies/blob/master/v1.1/dataset/dataset.xml there are dtypes which raise an exception during consistency_check() in odml_tables.py

For example, from the dataset terminology, the synonym "URL" for "url", but also "2-tuple" from the pulse stimulus are missing. Potentially there are even more dtypes missing. Can I safely add "2-tuples" to valid_dtypes and "URL" as synonym for "url"?