Upgrade Odamex's version control system to git
Odamex has used Subversion since its inception. I believe that it would be worthwhile to upgrade to a DVCS such as git sometime in the near future.
Git offers several advantages over SVN. It is far less likely to get tripped up on merges, since history is represented internally as a graph, not a linear sequence of commits with merges as an afterthought. It also generally quite a bit faster as well in day to day use, since most operations are done on a local repository instead of the remote repository. It is also by now a very mature and trustworthy piece of software and sees a considerable amount of use by other projects including the doom community's very own ZDoom.
Using git-svn to interact with the existing Subversion infrastructure is getting problematic...somehow some SVN mergeinfo has slipped through the cracks and none of the recent branches or merges have been picked up by it. A one-time conversion of Odamex's SVN history could be done and all of the missing merges can be spliced back in at that time.
Done 11/3/2016. Web site needs updating though :)