v3.1.4

• Add support for free api keys
• Update character limit

v3.1.2

• Add getSupportedLanguages() method
• Removed supportsLangCode() in favor of supportsSourceLangCode()
  and supportsTargetLangCode()

v3.0.2

Release v3.0.2

Upgrades dependencies

v3.0.1

Sets whether the translated text should lean towards formal or informal language.
This feature currently works for all target languages except "ES" (Spanish), "JA" (Japanese) and "ZH" (Chinese).
Possible options are:

• "default" (default)
• "more" - for a more formal language
• "less" - for a more informal language

$apiKey = 'Your-API-Key';
$deepLy = new DeepLy($apiKey);

$deepLy->formality('less');
// or
$translatedText = $deepLy->translate('Hello world!', DeepLy::LANG_EN, DeepLy::LANG_AUTO, 'more');

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See https://www.deepl.com/docs-api/translating-text/