1.6

* Features
    * Pass `extra_suffixes` directly to constructor
* Bugfixes
    * Punycode URLs were returned decoded, rather than left alone
    * Things that look like Punycode to tldextract, but aren't, shouldn't raise
    * Print unified diff to debug log, rather than inconsistent stderr

1.5.1

* Missing setuptools dependency
* Avoid u'' literal for Python 3.0 - 3.2 compatibility. Tests will still fail though.

* Exclude PSL's private domains by default - john-kurkowski#19

* `UnicodeError` for inputs that looked like an IP

Support punycode inputs. Fix minor Python 3 unicode errors.

Patch PSL's GitHub mirror rename from mozilla-central to gecko-dev, w…

…/o redirect.

Try Mozilla's PSL SPOT first, then the mirror.

* Specify your own PSL url/file with `suffix_list_url` kwarg

* `fallback_to_snapshot` kwarg - defaults to True
* Deprecate `fetch` kwag

Unforeseeable errors with fetching the PSL url should no longer crash…

… tldextract, but simply be logged, while falling back to the bundled PSL.

Emergency hotfix to use GitHub mirror of the PSL