metadata Types

I have added a variable which tells me the type of the metadata
variables. This is based on the metadata2 variable. I have also created
a metadata3 variable based on metadata2 where NA is converted to "not
available" for the purposes of generating plot colors where NA values
are not identifiable as factors.
draft.package consolidation

drat.package.R:
The draft package now contains all of the functions I need to run my
analysis exceot for those in network_informed_clustering_functions.R. I
moved them here from other scripts.There are also a couple at the
bottom of identify hypermutated samples I need to include.
draft_package will now run in it'e entirity pretty much without
intervention.

identify_hypermutated_samples:

I have removed some of the code that was here previous;y and shifted it
to draft.package.R.