v3.3.5

• EventStream:

  • Changed _controller field to nullable _controllerObj and lazily initialized it.
  • Changed _stream field to nullable _streamObj and lazily initialized it as a broadcast stream.
  • Updated add and addError methods to check isUsed (based on _streamObj presence) before adding events.
  • Updated close, isClosed, and isPaused to handle nullable _controllerObj.
  • Added isUsed getter to indicate if the stream has been used (initialized).

• New FlatHashMap:

  • Flat, index-based hash map with contiguous storage, free-list reuse, and
    adaptive unsigned chain pointers for reduced memory and improved cache locality.

• pubspec.yaml:

  • Updated dependency_validator version from ^5.0.3 to ^5.0.4.