0.4.0

• Crop region for screenshots is calculated via client script inside
  browser instead of gemini. This allows to issue fewer requests to
  Selenium Server speeding up total tests run time. This feature breaks
  compatibility with old browsers (IE < 9).

• New config format, which allows to specify full set of capabilities
  for browsers:

  browsers:
    phantomjs: phantomjs
    opera12:
        browserName: opera
        version: '12.06'
        platform: 'WINDOWS'
    firefox28:
        browserName: firefox
        version: '28.0'
    firefox27:
        browserName: firefox
        version: '27.0'

• Correctly capture screenshots of regions out of initial browser
  viewport in browsers, that can't capture full page (Opera and
  Chrome at the time of writing).

• outline-width of an elements is now also taken into account when
  calculating crop region.

• Add debug options to config file. If set to true, gemini will
  print debug logs to STDOUT. (@arikon).

• Add http section to config file which allows to configure HTTP
  timeout (http.timeout) retry count (http.retries) and delay
  between retries (http.retryDelay). (@arikon).

• Asynchronous errors stacktraces in browser actions (such as not found
  element) will point to users code.

• More HTTP requests to Selenium will run in parallel speeding up
  gather/test commands (@arikon).

• If gemini is run without subcommand, help text will be shown.