I wonder why the module 'turtle' was moved to the 'tkinter' package.  It
is not a part of Tk, it does not provide new or extend existing tkinter
API.  While it uses tkinter, so do pydoc or idle; this is just an
implementation detail.  If some day a new GUI library replaces tkinter
in the standard Python library, turtle's interface will not have to be
changed, only the implementation.  Moreover this change unnecessarily
breaks all existing demos and tutorials that use turtle.  Why do this if
it does not give any substantial benefits?  Finally, 'import turtle' is
easier than 'from tkinter import turtle' for complete newbies in
programming, who are the primary users of this module.

So I propose to keep turtle a top-level module as it was in Python 1 and 2.