Emacs 28.1

Changelog:

Emacs 28.1 has a wide variety of new features, including:

- Native compilation of Lisp files

- Text shaping with HarfBuzz and drawing with Cairo

- Support for loading Secure Computing filters

- Much improved display of Emoji and Emoji sequences

- New system for documenting groups of functions

- A minor mode for context menus

- Mode-specific commands

- Emacs shows matching parentheses by default

- Many improvements and extensions to project.el