------------------
Features
- Adds a language fallback feature for deprecated languages to
maintain compatiblity (e.g. `en-us` becomes `en`). Fallback can be
disabled with `lang_check=False` or `--nocheck` for the cli ([\267](https://github.com/pndurette/gTTS/issues/267))
Bugfixes
- Fix Python 2.7 compatiblity (!). Python 2 is long gone, but the cut
wasn\'t clearly communicated for gTTS, so it was restored. Python 2
support will be completely removed in the next major release. ([\255](https://github.com/pndurette/gTTS/issues/255))
- Language code case sensitivity is maintained throughout ([\267](https://github.com/pndurette/gTTS/issues/267))
Deprecations and Removals
- The following list of \'hyphenated\' language codes no longer work
and have been removed: `en-us`, `en-ca`, `en-uk`, `en-gb`, `en-au`,
`en-gh`, `en-in`, `en-ie`, `en-nz`, `en-ng`, `en-ph`, `en-za`,
`en-tz`, `fr-ca`, `fr-fr`, `pt-br`, `pt-pt`, `es-es`, `es-us`,
`zh-cn`, `zh-tw` ([\267](https://github.com/pndurette/gTTS/issues/267))
- Removed the `gtts.get_url()` method (outdated since `2.1.0`) ([\270](https://github.com/pndurette/gTTS/issues/270))