curate format-dates: Mention that 'XX' can be used in --expected-date-formats
#1718
+3
−1
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Description of proposed changes
This is worth calling out because it would be reasonable for a user to assume that Augur's support XX is automatically applied to dates like %Y-%m-%d. The added explicit mention + existing list of builtin formats including XX explicitly should help avoid that assumption.
Related issue(s)
#1709 (comment)
Checklist
ExtendOverwriteDefault
for all multi-value options #1709