Per PerlDancer/Dancer2-Plugin-Auth-Extensible#76 (reproduced below)
DPAE::Provider::Database depends on two extra columns in its user table, pw_reset_code varchar(32) and email (the address to send the email to).
These don't appear to be documented in the POD?
It would be great if, like users_username_column, there was a users_email_column to genericise this column too.