absorb: note some TODOs from the code review

Differential Revision: https://phab.mercurial-scm.org/D4047

hgext/absorb.py

@@ -25,6 +25,11 b' amend modified chunks into the correspon'
     absorb.path = bold
 """
 
+# TODO:
+#  * Rename config items to [commands] namespace
+#  * Converge getdraftstack() with other code in core
+#  * move many attributes on fixupstate to be private
+
 from __future__ import absolute_import
 
 import collections