NixOS:
feat: enable Trackpoint customization
feat: make Zig, Go available
chore: remove obsolete Emacs code for Rust
Emacs:
feat: visual-line mode now enabled globally
fix: make rustic-mode work with tree-sitter
The configuration options that used to be stored in Emacs.org and
Nix.org are now no longer split into two files. Instead, there now
is a single file SwarselSystems.org that holds both these configs.