In the data object, add support for just having a 'length' property in the sequence config

[mycql]

For vectors, you don't really need to have a range to express the boundary of the data being represented. If you have a circular map, it's understood that one wants to represent the entire molecule so instead of a range, jut have a 'length 'property and that should suffice. A molecule has a range of start 1 with end till length.