6.8.1
- Lock the version of Faraday: Faraday 1.0 was released with breaking changes. Thank you @taylorthurlow π (#752)
 - Add support for Ruby 2.7
 - 6.x releases are now tested in the latests Ruby versions: 2.4.9, 2.5.7, 2.6.5 and 2.7.0
 - Fix bad range value error