We've been putting together some contribution guidelines for the gonum project, and there is an initial proposal that has gone through initial review at
https://github.com/gonum/license/pull/26. Those guidelines will affect anyone contributing so we would like broad acceptance before merging. I personally think they are pretty unobjectionable, but if anyone has any objections, or wants parts reworked or clarified then please either explain why here or (preferably) on the pull request.
There are a few unresolved issues in the pull request as well:
Should it be gonum, Gonum, or GoNum?
Are the current package descriptions satisfactory? If not, what should replace them?