v0.7.0

• Removed / BC break: Remove deprecated and unneeded functionality
  (#45, #87, #90, #91 and #93 by @clue)

  • Remove deprecated Stream class, use DuplexResourceStream instead
    (#87 by @clue)

  • Remove public $buffer property, use new constructor parameters instead
    (#91 by @clue)

  • Remove public $stream property from all resource streams
    (#90 by @clue)

  • Remove undocumented and now unused ReadableStream and WritableStream
    (#93 by @clue)

  • Remove BufferedSink
    (#45 by @clue)

• Feature / BC break: Simplify ThroughStream by using data callback instead of
  inheritance. It is now a direct implementation of DuplexStreamInterface.
  (#88 and #89 by @clue)

  $through = new ThroughStream(function ($data) {
      return json_encode($data) . PHP_EOL;
  });
  $through->on('data', $this->expectCallableOnceWith("[2, true]\n"));
  
  $through->write(array(2, true));

• Feature / BC break: The CompositeStream starts closed if either side is
  already closed and forwards pause to pipe source on first write attempt.
  (#96 and #103 by @clue)

  If either side of the composite stream closes, it will also close the other
  side. We now also ensure that if either side is already closed during
  instantiation, it will also close the other side.

• BC break: Mark all classes as final and
  mark internal API as private to discourage inheritance
  (#95 and #99 by @clue)

• Feature / BC break: Only emit error event for fatal errors
  (#92 by @clue)

  The error event was previously also allowed to be emitted for non-fatal
  errors, but our implementations actually only ever emitted this as a fatal
  error and then closed the stream.

• Feature: Explicitly allow custom events and exclude any semantics
  (#97 by @clue)

• Support legacy PHP 5.3 through PHP 7.1 and HHVM and improve usage documentation
  (#100 and #102 by @clue)

• Actually require all dependencies so this is self-contained and improve
  forward compatibility with EventLoop v1.0 and v0.5
  (#94 and #98 by @clue)