If your New Year's resolution was to get more involved in open source then spare a thought for Higgs. This is a research project started by Maxime Chevalier-Boisvert at the University of Toronto to create an x86-64 compiler.
You can see a recent presentation of the ideas in the following video:
As its creator says:
If you would like to contribute then there are some "easy" tasks waiting for you at the Higgs GitHub pages. If you just want to try it out then you will find all of that you need in the same location.