I also changed the notes to reflect that you can easily upgrade from WriteFreely v0.3 or later with the same exact steps. I don't think there are many people on versions that old -- but just in case!
If you had trouble upgrading to #WriteFreely v0.12 and are running MariaDB, be sure to check out the updated migration notes: https://github.com/writeas/writefreely/releases/tag/v0.12.0
Thanks to @kushal for helping test and verify the fix!
New release: v0.12.0 https://github.com/writeas/writefreely/releases/tag/v0.12.0
Wrapping up #WriteFreely v0.12 documentation now, and I've added instructions for building without Make.
Am I missing anything? Would love any feedback.