🙇 We'd like to thank all contributors for this new release! In particular, Han Xiao, Jina Dev Bot, 🙇 - [[```a72a18d0```](https://github.com/jina-ai/docarray/commit/a72a18d03b937408a76658b421302d1b72ea1fdb)] __-__ __store__: change default serialization protocol to pickle (#97) (*Han Xiao*) - [[```f3f3de45```](https://github.com/jina-ai/docarray/commit/f3f3de450516f2bbecd56e6910e4cb0dd7d95ee1)] __-__ __version__: the next version will be 0.5.2 (*Jina Dev Bot*)