pay more attention to where we display the cursor

It's still just in app control; I'm resisting the urge to introduce
"smarts".

life.tlv

@@ -31,6 +31,7 @@
     >window = curses.stdscr()
     >-- animation-based app
     >window:nodelay(true)
+    >curses.curs_set(0)
     >lines, cols = window:getmaxyx()
 - __teliva_timestamp: original
   grid_char:

src/lua.c

@@ -1042,7 +1042,8 @@ void developer_mode (lua_State *L) {
   init_pair(COLOR_PAIR_LUA_CONSTANT, COLOR_LUA_CONSTANT, COLOR_BACKGROUND);
   init_pair(COLOR_PAIR_MATCH, COLOR_MATCH_FOREGROUND, COLOR_MATCH_BACKGROUND);
   init_pair(COLOR_PAIR_ERROR, COLOR_ERROR_FOREGROUND, COLOR_ERROR_BACKGROUND);
-  nodelay(stdscr, 0);  /* make getch() block */
+  nodelay(stdscr, 0);  /* always make getch() block in developer mode */
+  curs_set(1);  /* always display cursor in developer mode */
   int switch_to_big_picture_view = 1;
   if (editor_view_in_progress(L))
     switch_to_big_picture_view = restore_editor_view(L);

toot-toot.tlv

@@ -147,6 +147,7 @@
 - __teliva_timestamp: original
   window:
     >window = curses.stdscr()
+    >curses.curs_set(0)  -- we'll simulate our own cursor
 - __teliva_timestamp: original
   render:
     >function render(window)