This might be useful if ever rerunning a full day of results following
Met Office results. It has the basic dependencies that exist between
EWS components. It's rudimentary, but beats manually waiting and
watching for jobs to finish before starting the next component.

A much better tool would be a workflow manager with some sort of
'backfill' or 'rerun' option...

This relates to developments to ease the maintenance
of the forecast system. With this development, there is no R code to
actively maintain. Moving from git project wheat-source-generation to
ews-source-generation. The python code has been validated for
identical performance to the R version. The only differences are
small changes from the underlying shapefile reading packages
(see notes-on-rewriting-in-python.txt in ews-source-generation).

Keeping the option to used the R code for some time in case any
follow-up investigation is required.