[fetch] Replace byte stream with ReadableStream. (#200)

This change replaces byte streams used in request and response with ReadableStream. This change
also unifies some properties and operations which was defined separately in Request and Response
classes.

The change is based on
https://github.com/yutakahirano/fetch-with-streams/blob/master/body-readable-stream.md.
Depending specs need to be changed as well.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/fetch/pull/200

-- Commit Summary --

  * Remove "process response body".
  * Waiting for a response body / Bodies
  * "clone a body"
  * Requests / Responses
  * Body mixin
  * fetch algorithm sections
  * Fix markup and minor issues.
  * Request class
  * Response class
  * fetch method
  * fix

-- File Changes --

    M Overview.html (559)
    M Overview.src.html (559)

-- Patch Links --

https://github.com/whatwg/fetch/pull/200.patch
https://github.com/whatwg/fetch/pull/200.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fetch/pull/200