Release bundling up both the 0.3.1 minor release and the 0.4.0 release.

Changes

• ColBERT performance improvement! It should now be faster and result in stronger results following implementation of the JaColBERTv2.5 dynamic query length method.
• HuggingFace's Text-Embedding-Server (TEI) inference introduced as an API reranker option, thanks to @srisudarsan
• T5 bugfix for certain models, where the labels were incorrectly set. Thanks to @marcospiau
• Native default support for new Portuguese T5 rerankers introduced by @marcospiau