[EventLoop] Relax coverage constraints
[EventLoop] Bring tests to an almost decent level (incl LibEvent tests)
[EventLoop] Add libevent extension to travis.yml
[EventLoop] Add dev-dependency on pecl-libevent for tests
[EventLoop] Set travis.yml pecl-libevent version to beta
[EventLoop] Answer all travis pecl install questions with newline
[EventLoop] Install libevent onto the travis worker
[EventLoop] Run an install --dev for travis
Merge branch 'master' into loop-coverage

* master:
  [Stream] Rename (ReadableStream|WritableStream){ => Interface}
  Update composer.json minimum-stability to dev
  Update composer.lock
  [Http] Add example to test for memory leaks
  [Stream] Rewrite parallel-download example to use Stream\Stream
  [Stream] Move most of Socket\Connection logic to Stream\Stream, generic ftw
  [Socket] Connection should forward drain events from the buffer
  [Socket] Suppress notice when binding to a port, fixes #45
  [Stream] Add ReadableStream::isReadable and WritableStream::isWritable
  [Stream] Ensure Buffer closes after buffered end write
[EventLoop] libev implementation
Add libev installation to travis
[loop-libev] Fix memory leak
[loop-libev] Improve timer handling, use unique signatures, remove timer objects
Emit correct exception when trying to write to closed stream
Update changelog for v0.2.1
Merge branch 'master' into loop-libev

* master: (87 commits)
  [Http] Add tests for Request::expectsContinue()
  [Http] Add a test for Response::writeContinue()
  [Http] Add support for HTTP/1.1 continue status codes
  Update CHANGELOG
  handle write errors in Stream Buffer
  Make Espresso\Stack work with invokables
  Replace calls to array_merge with array_values
  Remove useless chr calls in DNS parser
  CHANGELOG for v0.2.0
  Fix some constraints to not use 0.2.*
  Update README and sub-composer.json files to point to 0.2.*
  Bump branch-alias to 0.2
  Update composer.lock
  Update git-subsplit script
  Add dns component to subtree split script
  [dns] Add todos and references to README
  [dns] Add RFCs as documentation
  [dns] Add todos for more robust resolver
  [dns] Parser test case with two answers
  [dns] Parse all answers from response, not just first one
  ...
[loop-libev] Refactor addTimer methods
may report Wrong parameters on line 93,
Merge pull request #77 from nobody1986/master

PHP Fatal error:  Wrong parameters for ErrorException
Remove now obsolete feof call