pimp2 translates a text into a support language and back into the original language
using DeepL API Free. Use available_languages2 to list all supported languages.
An authentication key is required to use this service. With the DeepL API Free package,
developers can translate up to 500,000 characters per month for free.
character vector with texts to be improved. Only UTF8-encoded plain text is supported.
An element can contain several sentences, but should not exceed 30kbytes.
source_lang
language of the text to be improved. If input is of length 1, the same source
language is applied to all elements.
help_lang
language used as a help language for reverse translation.