Changes in version 1.3: 
- numerous edits to fortran source code to better handle certain (rarer) types of relatives
- various bug fixes in fortran source code
- several functions have become user-visible: CheckGeno, MkGenoErrors, GetMaybeRel, GetRelCat
- plotting functions added: PlotAgePrior and summarySeq
- extended vignette with function overview & FAQ