Use consistent column names with separators when speaking about different representations of the same term

[jpfeuffer]

e.g.

sex.name
sex.accession

cellosaurus.name
cellosaurus.accession

This will help tremendously when converting to yaml, json to identify which columns belong together.

[ypriverol]

@jpfeuffer, what do you mean? Can you explain better? You mean instead of using a space as separator use a .