!todo `cross couped` is not centred on the field

[karlwilcox]

!todo cross couped is not centred on the field !draw quarterly Or and Argent, a cross couped Gules

[ericscheid]

Both cross couped and cross couped voided are off centre.

All the other cross charges are centred on the field.

[karlwilcox]

This is done, and I've written the code to make it easy to add any other crosses that should follow the same logic.

[karlwilcox]

I've added the saltire couped and the cross calatrava, which I think are the only crosses to add. If there are any other charges please let me know.