Features

• Added the autoPong option (01ba54e).

Notable changes

• The allowMultipleEventsPerMicrotask option has been renamed to
  allowSynchronousEvents (4ed7fe5).

This is a breaking change in a patch release that could have been avoided with
an alias, but the renamed option was added only 3 days ago, so hopefully it
hasn't already been widely used.

Features

• Added the allowMultipleEventsPerMicrotask option (93e3552).

Bug fixes

• Fixed an issue that allowed errors thrown by failed assertions to be
  swallowed when running tests (7f4e1a7).

Bug fixes

• Improved the reliability of two tests for CITGM (fd3c64c).

Features

• The WebSocket constructor now accepts HTTP(S) URLs (#2162).
• The socket argument of server.handleUpgrade() can now be a generic
  Duplex stream (#2165).

Other notable changes

• At most one event per microtask is now emitted (#2160).

Features

• Added the finishRequest option to support late addition of headers (#2123).

Bug fixes

• Added browser condition to package.json (#2118).

Features

• Added support for utf-8-validate@6 (ff63bba).

Other notable changes

• buffer.isUtf8() is now used instead of utf-8-validate if available
  (42d79f6).

Features

• WebSocket.prototype.addEventListener() now supports an event listener
  specified as an object with a handleEvent() method. (9ab743a).

Bug fixes

• WebSocket.prototype.addEventListener() now adds an event listener only if it
  is not already in the list of the event listeners for the specified event type
  (1cec17d).