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Features
- Added Languages: `zh-yue` : `Chinese (Cantonese)`,
`en-uk` : `English (United Kingdom)`,
`pt-br`: `Portuguese (Brazil)`, `es-es`:
`Spanish (Spain)`, `es-us` : `Spanish (United
StateS)`, `zh-cn`: `Chinese (Mandarin/China)`,
`zh-tw`: `Chinese (Mandarin/Taiwan)` ([\4](https://github.com/pndurette/gTTS/issues/4))
Bugfixes
- `gtts-cli` print version and pretty printed available languages,
language codes are now case insensitive
([\4](https://github.com/pndurette/gTTS/issues/4))