[epiphany] Update TODO again

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 12776a5f2cf750b1741fc9c6879c875cf1aaef59
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Wed Nov 28 21:37:09 2018 -0600

    Update TODO again

 TODO | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/TODO b/TODO
index e50e31b62..11df0071e 100644
--- a/TODO
+++ b/TODO
@@ -8,6 +8,7 @@ Some TODO items, in no particular order:
 - Name all timeout and idle sources
 - Replace constructor functions with constructed functions
 - Use g_clear_object/g_clear_pointer in dispose (and finalize?)
+- Use g_clear_weak_pointer and g_clear_handle_id
 - Replace dispose with finalize wherever possible
 - Use GtkBuilder instead of declaring the UIs with C
 - Use g_autofree/g_autoptr where possible