Running benchmarks

go test -bench=.

TLDR

String Manipulation

If inputs and outputs are strings, use +. Macbook air results:

BenchmarkAddStrings10	20000000	       121 ns/op
BenchmarkAddStringswJoin10	10000000	       189 ns/op
BenchmarkAddStringswFormat10	 5000000	       521 ns/op
BenchmarkAddStringswBytesBuffer10	10000000	       299 ns/op