v1.4.0

• Retry all calls that triggered the API ratelimit
• Slow down WatchProgress() in action client from 100ms polling interval to 500ms

v1.3.1

• Make clients using the old error code for ratelimiting work as expected
  (issue #73)

v1.3.0

• Support passing user data on server creation (issue #70)
• Fix leaking response body by not closing it (issue #68)

v1.2.0

• Add WatchProgress() to action client
• Use correct error code for ratelimit error (deprecated
  ErrorCodeLimitReached, added ErrorCodeRateLimitExceeded)

v1.1.0

• Add Image field to Server