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If you contributed to

12 or 13 (i.e. were acknowledged in the release notes), please claim your challenge coin :-) wiki.postgresql.org/wiki/Contribut

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I claim mine! I have the one for 12, but I think the 13 would look nice besides it

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I really liked the Postgres 12 challenge coin, and the general idea of putting out a challenge coin for each release. It's a nice memento.