This week in Nu #16: Refactoring for New Features

1st chunk of `blog/2019-12-13-twin0016.md`

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# This week in Nu #16

This week in Nu we continued to refactor the codebase to prepare for the next set of features. We've moved from the old plugin setup to the new subcrates setup for plugins and fixed some issues along the way.

- wycats landed multiple refactorings to move Nu to a multi-crate model, improve how we do syntax coloring, add a new Range primitive, and begin support for the new Signature style ([#1078](https://github.com/nushell/nushell/pull/1078), [#1077](https://github.com/nushell/nushell/pull/1077))
- jonathandturner reorganized what is a core command and what is a plugin, and moved a set of commands to subcrates as plugins ([#1076](https://github.com/nushell/nushell/pull/1076), [#1075](https://github.com/nushell/nushell/pull/1075), [#1073](https://github.com/nushell/nushell/pull/1073), [#1072](https://github.com/nushell/nushell/pull/1072), [#1070](https://github.com/nushell/nushell/pull/1070), [#1069](https://github.com/nushell/nushell/pull/1069), [#1062](https://github.com/nushell/nushell/pull/1062))
- thibran fixed a bunch of clippy warnings ([#1066](https://github.com/nushell/nushell/pull/1066), [#1061](https://github.com/nushell/nushell/pull/1061))
- naufraghi fixed tilde expansion ([#1060](https://github.com/nushell/nushell/pull/1060))
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Title: This week in Nu #16: Refactoring for New Features

Summary

Nu continued refactoring its codebase this week to prepare for new features, moving from the old plugin setup to the new subcrates setup and addressing related issues. Key changes include refactoring to a multi-crate model, improving syntax coloring, adding a new Range primitive, starting support for the new Signature style, reorganizing core commands and plugins, fixing clippy warnings, and fixing tilde expansion.