Here will have the commits
https://github.com/peteralfonso?tab=activity
The short answer is that you don't see change logs for Bugless because it's not CM10 or AKOP. That's not a knock on any ROM. They are all good, they are just different
You'll probably never see change logs for Bugless because;
1) It's an AOSP based ROM
2) Pete favors speed and stability over features so he doesn't add many
So, AOSP based ROMs are derived or built from the Android Open Source Project repository or repo. Google (and others) update the repo with new code and where it can be pulled down by ROM devs like Pete for ROMs like Bugless. The dev then adds in, takes out, or makes their changes and builds his ROM. You install their custom version of AOSP.
Now, AOSP gets new code added to it pretty regularly. There are also other files specific to each device that come from a host of other companies that get updated too. Those are called binaries usually. These are mostly device drivers for like the display or the radio or whatever. So, because AOSP is getting updated constantly with stuff, a good dev will sync up those changes into his ROM and release an update. Sometimes those fixes are minor bug fixes other times they are big but like any managed software, really big updates get reserved for major version increases.
Bottom line is the changes you seem coming in from AOSP, while important, aren't going to add anything changelog worthy unless you are jumping up a version. Since Pete doesn't add features, there's no real reason for a change log
But for those that care, the link above has everything. Things like "Update Toro proprietaries to JRO03O" or "Update Toro build fingerprint to JRO03O" or "fix Caller name disp not sticking for missed calls" or " show 3G icon for CDMA/1xRTT". Lots of stuff, just nothing particularly interesting.
I would update to this new version because of the binaries, make sure you are are on the latest bootloader and have the new radios too. Those are separate from bugless.