Nushell Updates - Week #67

1st chunk of `blog/2020-12-04-twin0067.md`

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# This week in Nu #67

- notryanb added a [`hash` command](https://github.com/nushell/nushell/pull/2769)
- gillespiecd updated [rustyline to 7.0](https://github.com/nushell/nushell/pull/2776)
- max-sixty made more of [Nushell's API public](https://github.com/nushell/nushell/pull/2772)
- fdncred enhanced the [version information available](https://github.com/nushell/nushell/pull/2773)
- jonathandturner has continued added [features to the nunu experimental project](https://github.com/jonathandturner/nunu/)

Title: Nushell Updates - Week #67

Summary

This week's updates to Nushell include adding a 'hash' command, updating rustyline to version 7.0, making more of Nushell's API public, enhancing version information, and continuing development on the nunu experimental project.