ensure eof newline option

[hayd]

I think atm new line is always added to eof (if missing) potentially this is a bug in autopep8, but we should have this as an option...

This is much less a problem than it was in earlier versions (where this counted as an additional radius to apply autopep8 to on a second iteration... I think it's ok now - should add test)

[schodge]

Less an issue, more an enhancement suggestion for a future rev, for the

  --ignore errors       do not fix these errors/warnings (default: E24)
  --select errors       fix only these errors/warnings (e.g. E4,W)

could we keep a config file of settings here - preferably on a per-project basis so projects can set their desired style? E.g., in Anconda on sublime, the config file includes:

    /*
        A list of pep8 error numbers to ignore.
        The list of error codes is in this file: https://github.com/jcrocholl/pep8/blob/master/pep8.py.
        Search for "Ennn:", where nnn is a 3-digit number.
    */
    "pep8_ignore":
    ["E301", "E302"
    ],

    // Maximum line length for pep8
    "pep8_max_line_length": 79,

    // Set this to true to turn pep257 checking on
    "pep257": false,

    /*
        A list of pep257 error numbers to ignore.
        The list can be found here: https://github.com/GreenSteam/pep257/#error-codes
        D209 Multi-line docstring should end with 1 blank line is ignored by
        default as it has been deprecated.
    */
    "pep257_ignore":
    [
        "D209"
    ],

[hayd]

definitely, see #30. I think this ought/has to be done at the same time as autopep8 (which doesn't do this either).