Yah, I wrote a `f(f^-1(x)) == x` test but ended up cutting for brevity. Also, running through every possible transform seems like a pain to debug if the error i

Yah, I wrote a `f(f^-1(x)) == x` test but ended up cutting for brevity. Also, running through every possible transform seems like a pain to debug if the error is somewhere in the middle. Perhaps it would be better to test every pair using the `GENERATE` clause in catch. That way you could narrow it down to two different algorithms.