Benchee run

Benchee.run(
  %{
    "JSON.encode!" => &JSON.encode!/1,
    "JSON.encode_to_iodata!" => &JSON.encode_to_iodata!/1,
    "EEx template" => &EExJsonEncoder.encode/1
  },
  inputs: %{
    "sample" => TestData.sample()
  },
  time: 5,
  warmup: 2,
  memory_time: 2,
  reduction_time: 2,
  print: [fast_warning: false]
)