* mix.R:

** rmbmix:
   Vectorised version of rmbmix.single

* mix.R

** rmbmix.single
   Argument stgs_alist can be either an alist of settings, or a file
   in YAML format that consists of that subset of settings which
   differs from the defaults.

** rmbmix.gen_comp_list
   CAS default to NA, if no CASRN provided

* mix.R

** rmbmix.single

   Add the archive directory argument. Also, perform steps 2-8 of the
   standard workflow.

* mix.R

** rmbmix.gen_comp_list
   Returns the number of compounds now.

** rmbmix.single
   Does the first step in the workflow. Prints out the message
   singifying whic file is currently being processed in order to
   associate with any possible warning messages. This association may
   break if we switch to parallel.

* mix.R

** rmbmix.single
   Settings have to be generated first, then the compound list and
   finally the file list.

* mix.R

** rmbmix.mkdir
   Generates temporary work dir to hold on-the-fly metadata.

** rmbmix.gen_comp_list
   Generate compound list.

** rmbmix.single
   Extend to include the work directory.

* mix.R

** (rmbmix.mk_sett_file):
   Function that generates the setting file
   based on a named list imput.

** (rmbmix.single):
   Unfinished stub.