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+bpo-45296: Clarify close, quit, and exit in IDLE. In the File menu,
+'Close' and 'Exit' are now 'Close Window' (the current one) and 'Exit'
+is now 'Exit IDLE' (by closing all windows). In Shell, 'quit()' and
+'exit()' mean 'close Shell'. If there are no other windows,
+this also exits IDLE.
+
bpo-45495: Add context keywords 'case' and 'match' to completions list.
bpo-45296: On Windows, change exit/quit message to suggest Ctrl-D, which