A few years back I worked on record linkage projects that relied in part on Soundex. My experience is that Soundex is on the faster side of the phonetic algorithm speed spectrum while (Double) Metaphone is on the other. In the middle are modifications to Soundex or similar approaches like Soundex2, Phonex, and NYSIIS.
For those interested I'd highly recommend the work of Peter Christen [1], who does a ton of research in this space. If you want to see some code, check out the implementations of several of these algorithms I wrote a while back [2].
The trick for me is to break things down into manageable chunks. It may be a larger feature, but it isn't anything that a git branch can't handle. I try to keep the effort in half-hour increments, because with two small kids there just isn't room for anything bigger (most of the time).
Also, I'll often briefly open up some code at work while I'm eating lunch just to get my mind going on it. A quick scan of the structure allows me to then break away from the computer to walk/think/socialize while my subconscious mind chews on whatever the problem is. Whenever I find a free chunk of time, I'll already have a rough idea of what I can do to push that needle forward. It's then just a matter of doing it!
Xonotic and its predecessor Nexuiz are also 100% free and open source (git.xonotic.org). Even the media like models and sounds are also released with source links, which considerably different from what Warsow is doing.
First of all, congrats! I have a three month old, and all I can say is that you just learn to cope. I've realized that some of my goals are going to have to slip for the time being while I care for my wonderful little girl. As for exercise, planning makes all of the difference! I bike to/from work or exercise over lunch, while my wife works out after work while I pick our daughter up from daycare (we alternate days). On the weekends we use a jogging stroller to get our hearts pumping while the little one snoozes away...
For those interested I'd highly recommend the work of Peter Christen [1], who does a ton of research in this space. If you want to see some code, check out the implementations of several of these algorithms I wrote a while back [2].
[1]: http://users.cecs.anu.edu.au/~christen/
[2]: https://github.com/antzucaro/matchr