feature request: twisted-style formatting

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Twisted's style guide is quite similar to PEP 8, except in a few places where it encodes a bit more information into the coding standard.

One place where it diverges is inter-function/inter-method vertical space separation. Python's guideline is 2-1-1: 2 lines between top-level suites, 1 line between functions, 1 line at your discretion to space out the implementation. Twisted's standard is 3-2-1: 3 between top-level suites, 2 between methods, 1 line between inner functions and at the user's discretion. This makes it a bit easier to visually scan for method endings, especially when methods often contain lots of callback functions.

Would it be possible to add a customization option to autopep8 to allow for these different blank-lines rules?