Nu Shell Updates - Week #60

1st chunk of `blog/2020-10-16-twin0060.md`

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# This week in Nu #60

- Couchbase announced a [new shell based on Nushell](http://couchbase.sh)
- andrasio simplified [making column paths](https://github.com/nushell/nushell/pull/2674), added a [`flatten` command](https://github.com/nushell/nushell/pull/2670), made sure that [chart command binaries are properly installed](https://github.com/nushell/nushell/pull/2667), updated the [wix plugin checker](https://github.com/nushell/nushell/pull/2666), added back [bigint/bigdecimal serialization](https://github.com/nushell/nushell/pull/2662)
- gillespiecd fixed a [typo in a crate description](https://github.com/nushell/nushell/pull/2669), added [tests for get_data_by_key](https://github.com/nushell/nushell/pull/2658), cleaned up [some extra files in the root](https://github.com/nushell/nushell/pull/2654)
- fdncred added [bson and sqlite to the wix](https://github.com/nushell/nushell/pull/2668)
- jonathandturenr released [version 0.21](https://github.com/nushell/nushell/pull/2663)
- andrasio/fdncred worked on an [xpath plugin](https://github.com/nushell/nushell/pull/2661) (see [also](https://github.com/nushell/nushell/pull/2656))
- wcarss disabled [rustyline's bracketed paste](https://github.com/nushell/nushell/pull/2659)
- RedlineTriad fixed [some string concatenation logic](https://github.com/nushell/nushell/pull/2655)
- luccasmmg added a new [`format filesize` command for formatting filesizes](https://github.com/nushell/nushell/pull/2650)
- jonstodle updated [command docs on the website to 0.20](https://github.com/nushell/nushell.github.io/pull/62)
- mbeijen fixed [a typo in the book](https://github.com/nushell/book/pull/133)

Title: Nu Shell Updates - Week #60

Summary

This week's Nu shell updates include Couchbase announcing a new shell based on Nushell, along with contributions from various developers including bug fixes, new features like a 'flatten' command and a 'format filesize' command, updates to documentation, and progress on an xpath plugin.