1.5.0
* Interrupted downloads now resume where they left off

1.4.6
* Better support of relative URLs

1.4.5
* Fail on error 501 (Not implemented)

1.4.4
* support relative URLs in Location header

1.4.3
* adapt client to 429 errors

1.4.2
* fixed issues with Python 3.4 and above

1.4.1
* provide more user friendly log messages when the client tries to reconnect
after it lost connection to the server
* provide the request ID in the client's log messages for easier traceability

1.4.0
* added support for Python 3

1.3.1
* fixed a bug where transfer errors did not trigger a retry of the transfer