EnvSuit pipeline update, to handle cleaning, job generation, and multiprocessing in a more direct way.

* configurable timespan can now state a fixed date in the past with a
  string <YYYYMMDD>.

* Epi plotting now generates two figures, one for integrated epi risk
  over past dates (from start of CalculationSpanDays until
   --start-date date), and a second for
  integrated epi risk over future dates (from date of --start-date
  until  end of configured CalculationSpanDays)

Will has been sending both netcdf and txt versions of NAME results for a while now.
When fully adopted and txt results are no longer sent, this has the
advantage of smaller data load on storage and transfer.
Here, the nc has been implemented for deposition only, since it is a
straightforward change.
The environmental suitability input (NAME met output) still needs to
be done.

Add WRSIS as a possible survey option. (New functions: WRSIS http request, json normalization, nested data flattening, and incident caltegorization)

EWS-advisory-builder had a bug fix which requires the config to be updated

Merge branch '10-buffer-logging-emails-and-send-at-end-of-script-or-hit-an-uncaught-exception' into 'master'

adding new bufferingSMTPHandler for Jake to consider

Closes #10

See merge request gilligan-epid/wheat-rusts/ews-coordinator!2

10-buffer-logging-emails-and-send-at-end-of-script-or-hit-an-uncaught-exception-2

To match EWS-advisory-builder commit 92edec8.

Needed for historical calculations over forecasts where the output formatting changed slightly.