2015-04-15: v5.6.3
  Expose connections flag in the attack command
  Add global cpu and heap profiling flags
  Measure actual attack rate and print it in relevant reporters
  Major performance improvements that allow much higher attack rates

2015-04-02: v5.6.2
  Update dygraph to latest version
  Improve plot reporter screenshot rendering by using html2canvas.js
  Improve plot reporter performance

2015-03-23: v5.6.1
  Allow spaces in hist reporter flag format

2015-03-12: v5.6.0
  Set default dumper to "json" in the dump command.
  Add --version to global vegeta command flags.
  Fix response body leak regression introduced in v5.5.3.

2015-03-11: v5.5.3
  Always read response bodies for each request.
  Homebrew install instructions.

2015-01-3: v5.5.2
  Refactor core request logic and simplify tests with a 4x speedup.

2015-01-2: v5.5.1
  Treat bad status codes as errors.

2014-11-21: v5.5.0
  Implement dump command with CSV and JSON record format.
  Optionally ignore redirects and treat them as successes.

2014-11-16: v5.4.0
  Add histogram reporter to the report command.

2014-11-16: v5.3.0
  Add support for extended targets dsl that supports per-target headers and body.
  Target file comments support has been removed.

2014-11-7: v5.2.0
  Don't treat 3xx status codes as errors.
  Add -keepalive flag to the attack command.

2014-11-3: v5.1.1
  Add FreeBSD and Windows releases.
  Fix non termination bug in the report command. #85
