2.0.0 - Remove Guzzle dependency
      - Remove Logger
      - Strict types (using typehints)
      - break bc
      - update license (unlicense)

1.3.3 - Report Good method
      - Report Bad method
      - php 7.2 and 7.3 testing enabled

1.3.2 - ReCaptcha V3 support
      - Codestyle fixes

1.3.0 - Keycaptcha support
      - Refactoring getCaptchaResult for json response

1.2.1 - Improve logger psr-3 support

1.2.0 - Add RecapthcaV2 methods

1.1.0 - Rename RucaptchaException to Exception
      - Resolve account limit codes on error response
      - Simplify error messages

1.0.6 - Add addPingback method
      - Add getPingbacks method
      - Add deletePingback method
      - Add deleteAllPingbacks method
      - Pingback examples
      - ErrorResponseException

1.0.5 - Add getLoad method example
      - Add getCaptchaResultWithCost method
      - Add codesniffer and fix codestyle
      - Start changelog
      - Update phpunit to 5.7
      - Travis php-5.5 testing off
