Added Christian Carrizosa as collaborator
Depend on R 4.1 and pedtools v2.2.0
FLB() now handles pedigrees with loops
FLB() now handles recessive models (AR and XR) and
homozygous carriers.
plotSegregation() now produces sensible default
margins in most cases
plotSegregation() has new arguments
pos.geno and pos.arrow for alternative
placements of genotype symbols and proband arrow
Added several new examples and tests
General code updates and improved organisation