v1.3.0: Improve API consistency

✨ Major features and improvements

• Add Span.sentiment attribute.
• #658: Add Span.noun_chunks iterator (thanks @pokey).
• #642: Let --data-path be specified when running download.py scripts (thanks @ExplodingCabbage).
• #638: Add German stopwords (thanks @souravsingh).
• #614: Fix PhraseMatcher to work with new Matcher (thanks @sadovnychyi).

🔴 Bug fixes

• Fix issue #605: accept argument to Matcher now rejects matches as expected.
• Fix issue #617: Vocab.load() now works with string paths, as well as Path objects.
• Fix issue #639: Stop words in Language class now used as expected.
• Fix issues #656, #624: Tokenizer special-case rules now support arbitrary token attributes.

📖 Documentation and examples

• Add "Customizing the tokenizer" workflow.
• Add "Training the tagger, parser and entity recognizer" workflow.
• Add "Entity recognition" workflow.
• Fix various typos and inconsistencies.

👥 Contributors

Thanks to @pokey, @ExplodingCabbage, @souravsingh, @sadovnychyi, @manojsakhwar, @TiagoMRodrigues, @savkov, @pspiegelhalter, @chenb67, @kylepjohnson, @YanhaoYang, @tjrileywisc, @dechov, @wjt, @jsmootiv and @blarghmatey for the pull requests!