Replace commit/ack/frame protocol with simpler sync and frame callbacks
diff --git a/clients/terminal.c b/clients/terminal.c
index 1bb496d..c841ef2 100644
--- a/clients/terminal.c
+++ b/clients/terminal.c
@@ -215,7 +215,7 @@
 
 	window_draw(terminal->window);
 	terminal_draw_contents(terminal);
-	window_commit(terminal->window, 0);
+	window_flush(terminal->window);
 }
 
 static void