I've response to the good feedback [1] from asn, nickm, and yawning, I've tagged v0.2.2 [2] of fteproxy. This release includes the removal of gmpy as a dependency, additional documentation to explain the significance of language theoretical algorithms, and bounds checking of the input/output of our (un)ranking algorithms.
I look forward to feedback on v0.2.2!
-Kevin
[1] https://trac.torproject.org/projects/tor/ticket/10362#comment:2 [2] https://github.com/kpdyer/fteproxy/tree/384a4b0ba5a5