1.4.1

• Do not automatically update the Redlist species timestamp.
• Add docs in readme on how to trigger a timestamp update.

Includes 1.4.0

• Automate update of Redlist Species last updated timestamp by using a dotfile
  stored in the tmp directory. Defaults to the last known manual update Oct 2021
  if not present.

The file is touched with RedlistSpeciesLastUpdated.touch! after the
import_new_redlist_data Rake task is completed.

If a deployment fails, there is a chance that this might be touched prematurely.
There is currently no way to automatically revert this if such an event occurs.
But we think it's negligible.

• Rename the variable used for the last updated formatted date.
• Update the docs for the statistics instructions to convey that the country
  statistics CSVs' filename should be checked against the specified format.