Nu Shell Updates - Week #74

1st chunk of `blog/2021-01-22-twin0074.md`

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# This week in Nu #74

- LhKipp added parsing of [rest args for custom commands](https://github.com/nushell/nushell/pull/2961), fixed [parsing of ranges and invocations](https://github.com/nushell/nushell/pull/2945), added [long/short flags to custom commands](https://github.com/nushell/nushell/pull/2944)
- baoyachi updated [shadow-rs](https://github.com/nushell/nushell/pull/2960)
- fdncred improved [sys output](https://github.com/nushell/nushell/pull/2959), added more [ansi sequences](https://github.com/nushell/nushell/pull/2955)
- andrasio cleaned up [examples tests](https://github.com/nushell/nushell/pull/2957)
- jonathandturner switched from [heim to sysinfo](https://github.com/nushell/nushell/pull/2954), [flush out! lines](https://github.com/nushell/nushell/pull/2952)
- kubouch added [`nth --skip`](https://github.com/nushell/nushell/pull/2953)
- ankhrr fixed [variable capture missing cases](https://github.com/nushell/nushell/pull/2951)
- brightly-salty [replaced dirs/directories](https://github.com/nushell/nushell/pull/2949)
- jankeromnes fixed [gitpod](https://github.com/nushell/nushell/pull/2948)
- We created a new [repo to hold Nu scripts people write](https://github.com/nushell/nu_scripts)

Title: Nu Shell Updates - Week #74

Summary

This week's updates to Nu shell include improvements to custom command parsing, shadow-rs updates, sys output enhancements, test cleanup, a switch from heim to sysinfo, the addition of `nth --skip`, fixes for variable capture, replacement of dirs/directories, Gitpod fixes, and the creation of a new repository for user-submitted Nu scripts.