8.0.0

Breaking changes

• Fetch only one page when _limit is specified and allow to override this
  with a pages argument (fixes #136)
• Make client methods API consistent by forcing keyword parameters (#119)
• Deduce the id of a resource with the value of id in data if present (#143)
• Drop Python 2.7 support. Now supports Python 3.5+

New Features

• Keep tracks of Backoff headers and raise an BackoffException if
  we are not waiting enough between two calls. (#53)
• Add --retry and --retry-after to CLI utils helpers (fixes #126)

Bug fixes

• Fix retry behaviour when responses are successful (fixes #129)
• Fix Retry-After value to be read as integer rather than string. (#131)
• Fix No JSON could be decoded ValueError (fixes #116)

Internal changes

• make tests-once to run functional tests in order to calculate coverage correctly (#131)