4.0.0: WebSocket client

• Dropped support for PHP < 7.4, see xp-framework/rfc#343 - @thekid
• Heads up: The websocket.Listener's close() method now has two
  additional parameters, code and reason, which need to be added to
  implementations.
  (@thekid)
• Merged PR #6: Add WebSocket client implementation - @thekid

3.1.0: XP 12 compatibility

• Made compatible with XP 12 - @thekid

3.0.0: Open/close listeners

• Made it possible to directly return a listener from Listeners::serve().
  (@thekid)
• Merged PR #5: Make it possible to react to connections being opened and
  closed. Implement the websocket.Listener class' methods open() and
  close() respectively. These are NOOPs by default.
  (@thekid)

2.1.0: Environment accessors

• Merged PR #4: Add accessor for system's temporary directory - @thekid
• Merged PR #3: Access environment variable accessors - @thekid
• Fixed xp ws command to work correctly via Composer - @thekid
• Added PHP 8.4 to test matrix - @thekid
• Merged PR #2: Migrate to new testing library - @thekid

2.0.0: Drop XP < 9, add XP 11

• Made library compatible with XP 11 - @thekid
• Implemented xp-framework/rfc#341, dropping compatibility with XP 9
  (@thekid)

1.0.1: Library compatibility

• Made compatible with xp-forge/uri version 2.0.0 - @thekid

1.0.0: Drop PHP5

• Implemented xp-framework/rfc#334: Drop PHP 5.6. The minimum required
  PHP version is now 7.0.0!
  (@thekid)
• Made compatible with XP 10 - @thekid

0.2.0: Composer fix

• Fixed Skipped installation of bin bin/xp.xp-forge.web error
  when installing with Composer
  (@thekid)

0.1.0: Initial release

• Hello World! First release - @thekid