Benchmark: timing 50000 iterations of Aristotle, Fatvamp, bobn, buk2...
 Aristotle:  8 wallclock secs ( 9.22 usr +  0.00 sys =  9.22 CPU) @ 5422.99/s (n=50000)
   Fatvamp: 12 wallclock secs (12.30 usr +  0.00 sys = 12.30 CPU) @ 4065.04/s (n=50000)
      bobn:  8 wallclock secs ( 9.68 usr +  0.00 sys =  9.68 CPU) @ 5165.29/s (n=50000)
      buk2:  8 wallclock secs ( 8.42 usr +  0.00 sys =  8.42 CPU) @ 5938.24/s (n=50000)

Benchmark: timing 50000 iterations of Aristotle, Fatvamp, bobn, buk2...
 Aristotle: 11 wallclock secs ( 8.96 usr +  0.01 sys =  8.97 CPU) @ 5574.14/s (n=50000)
   Fatvamp: 17 wallclock secs (13.16 usr +  0.06 sys = 13.22 CPU) @ 3782.15/s (n=50000)
      bobn: 10 wallclock secs (10.29 usr +  0.01 sys = 10.30 CPU) @ 4854.37/s (n=50000)
      buk2:  8 wallclock secs ( 8.35 usr +  0.01 sys =  8.36 CPU) @ 5980.86/s (n=50000)