Update hyper requirement to ^0.12

[dependabot-preview]

Updates the requirements on hyper to permit the latest version.

Release notes

Sourced from hyper's releases.

v0.12.0

Features

• lib:
  • add HTTP/2 support for Client and Server (c119097f)
  • convert to use tokio 0.1 (27b8db3a)
  • replace types with those from http crate (3cd48b45)
• body:
  • remove Body::is_empty() (19f90242)
  • change Payload::Data to be a Buf (a3be110a, closes #1508)
  • add From<Box<Stream>> impl for Body (45efba27)
  • introduce a Payload trait to represent bodies (fbc449e4, closes #1438)
• client:
  • rename FutureResponse to ResponseFuture (04c74ef5)
  • support local bind for HttpConnector (b6a3c85d, closes #1498)
  • add support for title case header names (#1497) (a02fec8c, closes #1492)
  • add support to set SO_NODELAY on client HTTP sockets (016d79ed, closes #1473)
  • improve construction of Clients (fe1578ac)
  • redesign the Connect trait (8c52c2df, closes #1428)
• error: revamp hyper::Error type (5d3c4722, closes #1128, #1130, #1431, #1338)
• rt: make tokio runtime optional (d127201e)
• server:
  • support HTTP1 and HTTP2 automatically (bc6af88a, closes #1486)
  • re-design Server as higher-level API (c4974500, closes #1322, #1263)
• service: introduce hyper-specific Service (2dc6202f, closes #1461)

Bug Fixes

• lib: remove deprecated tokio-proto APIs (a37e6b59)
• server: panic on max_buf_size too small (aac250f2)

Breaking Changes

• Body::is_empty() is gone. Replace with
  Body::is_end_stream(), from the Payload trait.

  (19f90242)

• Each payload chunk must implement Buf, instead of
  just AsRef<[u8]>.

  (a3be110a)

• Replace any references of
  hyper::client::FutureResponse to hyper::client::ResponseFuture.

  (04c74ef5)

• The Service trait has changed: it has some changed
  associated types, and call is now bound to &mut self.

  The NewService trait has changed: it has some changed associated
  types, and new_service now returns a Future.

... (truncated)

Changelog

Sourced from hyper's changelog.

v0.12.0 (2018-06-01)

Features

• lib:
  • add HTTP/2 support for Client and Server (c119097f)
  • convert to use tokio 0.1 (27b8db3a)
  • replace types with those from http crate (3cd48b45)
• body:
  • remove Body::is_empty() (19f90242)
  • change Payload::Data to be a Buf (a3be110a, closes #1508)
  • add From<Box<Stream>> impl for Body (45efba27)
  • introduce a Payload trait to represent bodies (fbc449e4, closes #1438)
• client:
  • rename FutureResponse to ResponseFuture (04c74ef5)
  • support local bind for HttpConnector (b6a3c85d, closes #1498)
  • add support for title case header names (#1497) (a02fec8c, closes #1492)
  • add support to set SO_NODELAY on client HTTP sockets (016d79ed, closes #1473)
  • improve construction of Clients (fe1578ac)
  • redesign the Connect trait (8c52c2df, closes #1428)
• error: revamp hyper::Error type (5d3c4722, closes #1128, #1130, #1431, #1338)
• rt: make tokio runtime optional (d127201e)
• server:
  • support HTTP1 and HTTP2 automatically (bc6af88a, closes #1486)
  • re-design Server as higher-level API (c4974500, closes #1322, #1263)
• service: introduce hyper-specific Service (2dc6202f, closes #1461)

Bug Fixes

• lib: remove deprecated tokio-proto APIs (a37e6b59)
• server: panic on max_buf_size too small (aac250f2)

Breaking Changes

• Body::is_empty() is gone. Replace with
  Body::is_end_stream(), from the Payload trait.

  (19f90242)

• Each payload chunk must implement Buf, instead of
  just AsRef<[u8]>.

  (a3be110a)

• Replace any references of
  hyper::client::FutureResponse to hyper::client::ResponseFuture.

  (04c74ef5)

• The Service trait has changed: it has some changed
  associated types, and call is now bound to &mut self.

  The NewService trait has changed: it has some changed associated

... (truncated)

Commits

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