[mapserver-dev] DOI now enabled for MapServer releases

[Jeff McKenna]

Hi devs,

Short story: I've setup the webhooks to automatically generate a DOI for 
the next MapServer (8.0) release.

Background: Peter Löwe and I have been working on archiving the original 
FOSS4G project, MOSS, and one of the things we have done is generate a 
DOI (Digital Object Identifier) for the MOSS software project.  DOIs 
allow researchers to properly cite the software, and also allow direct 
downloads of the releases, and give the release even more views & 
downloads (see the GRASS stats below).

And when looking at the MapServer DOI stuff today, I made several fixes 
to the MOSS DOI process, so, win-win, ha.

Here are some example DOIs in action:

- MOSS: https://zenodo.org/record/5140318
- GRASS 8 RC1 release: https://zenodo.org/record/5810537

Will also add the fancy DOI badge to our 'marketing' when we do the 
MapServer 8.0 release...

-jeff