Fix
- Remove upper bound on python requirement (74) ([`0de1e53`](https://github.com/aio-libs/aiohappyeyeballs/commit/0de1e534fc5b7526e11bf203ab09b95b13f3070b))
- Preserve errno if all exceptions have the same errno (77) ([`7bbb2bf`](https://github.com/aio-libs/aiohappyeyeballs/commit/7bbb2bf0feb3994953a52a1d606e682acad49cb8))
- Adjust license classifier to better reflect license terms (78) ([`56e7ba6`](https://github.com/aio-libs/aiohappyeyeballs/commit/56e7ba612c5029364bb960b07022a2b720f0a967))
Documentation
- Add link to happy eyeballs explanation (73) ([`077710c`](https://github.com/aio-libs/aiohappyeyeballs/commit/077710c150b6c762ffe408e0ad418c506a2d6f31))