PASS
BenchmarkSafe	  500000	      6131 ns/op
BenchmarkUsuallySafe	  200000	      7864 ns/op
BenchmarkUnsafe	  100000	     28560 ns/op
BenchmarkAllDWORD	   50000	     38722 ns/op
BenchmarkAllOctal	   50000	     40941 ns/op
BenchmarkAllHex	   50000	     44063 ns/op
BenchmarkAllCombined	   50000	     33613 ns/op
ok  	github.com/PuerkitoBio/purell	17.404s
