Version 0.24

Minor changes

• Added function cross2_do_to_genail8() for converting a cross2 object of type "do" to one of type "genail8". Also present with the alias cross2_do_to_genail().

• Removed LazyData field from DESCRIPTION file

Bug fixes

• Needed to fix use of nchar() in encode_geno() as it no longer works properly with data frames.