Krakout: Redraw the options screen, then poll Q to quit

C207: Redraw the options screen, then poll Q to quit

Tail shared by every fire-triggered option change: it redraws the option lines so the new value shows, then polls Q. A held Q leaves to the title screen, and otherwise the menu input loop resumes.
options_apply_tail	C207	CALL draw_options_menu	Repaint the page so the new value shows.
Alternate entry, taken from the fire test when fire is not held: nothing changed, so it skips the redraw and polls Q straight away.
options_poll_quit	C20A	LD BC,KBD_ROW_Q_T	Read the "Q W E R T" keyboard half-row.
	C20D	IN A,(C)	Read the "Q W E R T" keyboard half-row.
	C20F	AND $1F	Keep the five key bits; a pressed key reads as 0.
	C211	BIT 0,A	Q held? (bit 0, active low).
	C213	JP NZ,options_loop	Q up: re-enter the menu input loop to re-read the cursor and fire.
	C216	CALL wait_no_key	Q held: wait for every key to release, then return to the title screen.
	C219	JP title_screen

Routines