Cutting version 0.0.4.
Cutting version 0.0.4.

- Re-organized implementation from `google.resumable_media` into
  `google.resumable_media.requests`. This way, the subpackages
  `google.resumable_media.FOO` can **explicitly** support a given
  transport library `FOO`. Currently, the only one with explicit
  support is [`requests`][1]. (It's worth noting that the **majority**
  of the behavior has been moved into partially abstract classes in the
  non-public `google.resumable_media._download` and
  `google.resumable_media._upload` modules. This way, support for
  new transports can be added with little effort.)

[1]: http://docs.python-requests.org/en/master/

googleapis/google-resumable-media-python,googleapis/google-resumable-media-python