Reopen #120

Hi, guys! Do you remember [#120](https://github.com/alecthomas/go_serialization_benchmarks/issues/120)? I implemented something similar, but in a separate [project](https://github.com/ymz-ncnk/go-serialization-benchmarks). And we could merge both projects into one. As a variant, we could create an organization on github where each serializer would have its own module, or we could merge them right here. What do you think?