bpo-33187: Document 3.9 changes to xml.etree.ElementInclude.include (GH-20438)

Looks like the merging of bpo-33187 and bpo-20928 was racy, resulting in
this change going undocumented.

Shantanu committed 5y ago

301f0d4ff9b6bd60599eea0612904f65a92e6dd9

Parent: 63fc55b

Committed by GitHub <noreply@github.com> on 6/8/2020, 2:11:44 PM