Fleshed out the UI a little. Added a "literal" button that replaces the operator panel with a literal panel. Added the navigation buttons, but they're not functional yet.

#{
	main <- {
		foo <- dict linear:
		foo set: "key1" "val1"
		foo set: "key2" "val2"
		foreach: foo :k :v {
			print: k . ", " . v . "\n"
		}

	}
}