Update NEWS, cleanup

degesch.c

@@ -213,7 +213,7 @@ struct input_vtable
 	void (*hide) (void *input);
 	/// Show the prompt if hidden
 	void (*show) (void *input);
-	/// Change the prompt string; takes ownership
+	/// Retrieve current prompt string
 	const char *(*get_prompt) (void *input);
 	/// Change the prompt string; takes ownership
 	void (*set_prompt) (void *input, char *prompt);
@@ -222,7 +222,6 @@ struct input_vtable
 
 	/// Create a new input buffer
 	input_buffer_t (*buffer_new) (void *input);
-	// XXX: there's also destroy_buffer
 	/// Destroy an input buffer
 	void (*buffer_destroy) (void *input, input_buffer_t buffer);
 	/// Switch to a different input buffer