real	1m18.786s
user	1m53.443s
sys	0m1.315s
class -> record

real	1m11.176s
user	1m38.929s
sys	0m0.936s
refactored vec-*

real	1m3.735s
user	1m29.131s
sys	0m0.858s
ref -> vector-ref

real	0m52.738s
user	1m12.154s
sys	0m0.683s
real	0m47.909s
user	1m4.600s
sys	0m0.591s
real	0m54.615s
user	1m9.250s
sys	0m0.611s
real	0m47.525s
user	1m3.984s
sys	0m0.604s
real	0m47.724s
user	1m4.211s
sys	0m0.591s
real	0m48.952s
user	1m4.818s
sys	0m0.600s
real	0m45.356s
user	1m1.258s
sys	0m0.570s
Merge branch 'master' of github.com:torus/raytracer