Parser is not configurable in regard to `lineTerminator` despite the types saying so

[jedesah]

Either document or make the types reflect the fact that the parser does not support customizing the Format as far as lineTerminator is concerned.

Perhaps a ReadFormat which has all the fields of Format except for lineTerminator. It's misguiding that CVSFormat takes a lineTerminator field yet, that field is completely ignored by the parser.

Alternatively, make the parser customizable in regards to lineTerminator.