This is a major upgrade providing improved stability and new classes and features. ** What's changed in this release: ** * major refactoring and improvements to life cycle management * add Wx::WEB module * add full support for wxWebView as Wx::WEB::WebView * add Wx::WEB::WebView sample * update INSTALL.md for WebView options * add Wx::HTML::HtmlModalHelp * add Wx::ContextHelp * add Wx::HelpProvider sample * add support for Ruby Ractor * add Wx::RT module * add Wx::RT::SharedEvtHandler and Wx::RT::ThreadEvent * implement custom main event loop with automatic support for Ruby Thread and Ractor * refactor event/threaded.rb sample to properly demonstrate Fiber, Thread and Ractor support * extended regression tests * update documentation and wiki * update wxWidgets master branch compatibility to at least commit b226c77ec2ed77d636afe892acc39b186f03c12a Note: This release has dropped support for Ruby version < 3.0.