`zellij attach -a my-session -- htop` starts a session with an initial command; `explicit_theme_hue` pins a dark or light appearance; scroll mode sync can be turned off.
v0.45.1.
Fixed and improved
`zellij attach -a <session> -- <command>` creates the session if needed and runs the command in it.
ImprovedDetach from a session and attach to it again later, with its programs still running.
