simplemma-0.7.0

• breaking change: language data pre-loading now occurs internally, language codes are now directly provided in lemmatize() call, e.g. simplemma.lemmatize("test", lang="en")
• faster lemmatization and result cache
• sentence-aware text_lemmatizer()
• optional iterators for tokenization and lemmatization

Full Changelog: v0.6.0...v0.7.0