Nu Shell Updates - Week #62

1st chunk of `blog/2020-10-30-twin0062.md`

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# This week in Nu #62

- LhKipp added optional [type inference for the `alias` command](https://github.com/nushell/nushell/pull/2685)
- gillespiecd added a [radix option for str decimal conversion](https://github.com/nushell/nushell/pull/2696), added [rounding precision](https://github.com/nushell/nushell/pull/2710), added [inode information to `ls -l`](https://github.com/nushell/nushell/pull/2711)
- CBenoit improved [passing strings to external commands](https://github.com/nushell/nushell/pull/2697)
- fdncred added [some helper methods for working with structured values](https://github.com/nushell/nushell/pull/2698), added [a `seq` command](https://github.com/nushell/nushell/pull/2704), added [`char` support for arbitrary unicode](https://github.com/nushell/nushell/pull/2709), improved [rounding](https://github.com/nushell/nushell/pull/2712)
- jonathandturner removed [it-expansion](https://github.com/nushell/nushell/pull/2701), bumped to [0.21.1](https://github.com/nushell/nushell/pull/2702), added [block type inference](https://github.com/nushell/nushell/pull/2706)
- jjshanks updated [required rust version](https://github.com/nushell/nushell/pull/2718)

Title: Nu Shell Updates - Week #62

Summary

This week's updates to the Nu shell include: optional type inference for the `alias` command, radix option for str decimal conversion, rounding precision, inode information to `ls -l`, improved string passing to external commands, helper methods for structured values, a `seq` command, `char` support for arbitrary unicode, improved rounding, removal of it-expansion, a version bump to 0.21.1, block type inference, and an updated required rust version.