six.iterbytes name collision with (deferred) PEP 0467

[graingert]

There's a proposal (PEP 0467) to add a bytes.iterbytes method, that currently does the opposite of six.iterbytes

>>> tuple(b"ABC".iterbytes())
(b'A', b'B', b'C')
>>> tuple(six.iterbytes(b"ABC"))
(65, 66, 67)

in an ideal world I'd like to see:

>>> tuple(six.iterbytes(b"ABC"))
(b'A', b'B', b'C')
>>> tuple(six.iterords(b"ABC"))
(65, 66, 67)

but that would require a major version change, as it's changing the existing six.iterbytes function

[graingert]

/cc @ncoghlan @ethanfurman