Replaced parallel package use with furrr. This led to removal of the argument n_cores from both boot_pvl and scan_pvl. A user may now use future::plan to run in parallel.
Moved vignettes to website: https://fboehm.us/software/qtl2pleio
Minor changes
Fixed argument name in boot_pvl, changing nboot_per_job to nboot.
Created function scan_pvl_clean to be called in both scan_pvl and boot_pvl. This change shouldn’t affect most users’ experiences.