More ways of recognising DOI metadata are now supported! Specifically, the markup used by Pubpub is now recognised by get-dois as well. (Technical details: get-dois now also detects meta tags that label themselves as DOI metadata using RDFa (i.e. using the property attribute rather than name).)
Breaking changes
If you're relying on a specific set of DOIs being detected, this release is breaking: more representations of DOIs can now be found. Altough I did not do that in the past, I'll be marking that as breaking from now on as well.