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# This week in Nu #3

Lots of stability improvements this week with better support for parsing, external commands, and more.

- vsoch continues pushing Docker support forward, and added support for Ubuntu 18.04 ([#663](https://github.com/nushell/nushell/pull/663))
- androbtech removed our dependency on regex, as part of the effort to improve build times ([#651](https://github.com/nushell/nushell/pull/651))
- max-sixty landed a CI guard to ensure the codebase was properly formatted ([#649](https://github.com/nushell/nushell/pull/649))
- wycats landed an improved parser that is both more stable and handles external commands better ([#632](https://github.com/nushell/nushell/pull/632))
- chhetripradeep added a `pwd` command ([#612](https://github.com/nushell/nushell/pull/612))
- tim77 added instructions for Fedora ([#607](https://github.com/nushell/nushell/pull/607))
- Lots of bugfixes by est31, tim77, pmeredit, vsoch, lesichkovm. Big thanks to bug reporters jeka, stephanemagnenat, twe4ked, rrichardson, bmurphy1976, joedborg, and lienke.
- Fix for long-standing issue where externals freeze when outputting large amounts of output ([#664](https://github.com/nushell/nushell/pull/664))
- Added support for "did you mean?"-style errors when a column is mistyped. ([#662](https://github.com/nushell/nushell/pull/662))
- Added a lighter-weight table output format ([#631](https://github.com/nushell/nushell/pull/631))
- More plugins were made optional to help with build times. To get the full behavior be sure to build with `--all-features`([#617](https://github.com/nushell/nushell/pull/617))
- Improved help system was added. Type `help` to get started ([#657](https://github.com/nushell/nushell/pull/657))
- Updates by ymgyt, androbtech, and pka to the [Nu book](https://book.nushell.sh/)
- Updates to the [Contributor Handbook](https://github.com/nushell/contributor-handbook), a guide for developers working on Nu
Title: Nu Weekly Update #3: Stability Improvements and New Features
Summary
This week's Nu update focuses on stability improvements, including better parsing and external command handling. Key updates include Docker support for Ubuntu 18.04, removal of the regex dependency to improve build times, a CI guard for code formatting, an improved parser, a 'pwd' command, Fedora instructions, bug fixes, fixes for external freezing issues with large outputs, 'did you mean?' error support for mistyped columns, a lighter table output format, optional plugins, an improved help system, and updates to the Nu book and Contributor Handbook.