Issue #17225: JSON decoder now counts columns in the first line starting
with 1, as in other lines.
#17255: test short-circuiting behavior of any()/all().  Patch by Wim Glenn.
Issue #17203: add long option names to unittest discovery docs.
#17256: fix syntax highlight in embedding example.  Patch by Kushal Das.
#17271: update example in tempfile docs.