[pacman-dev] Correct alpm version to bind to?

Hi all, I'm the Aura dev. I'm writing alpm bindings for it, and I got a fair distance through before I realized that my up-to-date paper copies and the version of `alpm.h` actually bundled with pacman on my machine are quite different. The local one (/usr/include/alpm.h) is dated 2016 and has types / function signatures that vary a fair amount from what's currently on master, although they both report their versions to be 10.0.1. Is the most recent alpm supposed to be bundled with pacman? What incarnation of alpm does our installed pacman (5.0.1-5 as of this writing) bind to itself? Which version should be considered the "ground truth" for people writing bindings? Thanks, Colin