There are two available snapshots that I found: on the GitHub releases page from 2017-12-23 and on Clojars from 2018-01-09. The commit I'm after is from 2018-01-13, though.
@ska I checked my ~/.m2 and you are right, my versions do match the ones you found, sorry about that. @alandipert I think something went wrong with the deploy of new snapshot versions.
@mynomoto no worries. I just don't feel like replicating some of the things added to boot in the meantime to continue with my little boot-attribution project. The clock is ticking, though 😉