Nushell, Nu_Scripts, and Reedline Updates

- kubouch created [Fix config variable name](https://github.com/nushell/nushell.github.io/pull/459), and [Add 'overlay new' tip](https://github.com/nushell/nushell.github.io/pull/457), and [Add overlays chapter](https://github.com/nushell/nushell.github.io/pull/456) - schuelermine created [book/operators.md: add `not` operator](https://github.com/nushell/nushell.github.io/pull/458) ## Nu_Scripts - Yethal created [Update branch-protections.nu](https://github.com/nushell/nu_scripts/pull/251), and [Add branch protections](https://github.com/nushell/nu_scripts/pull/250), and [Update remoting.nu](https://github.com/nushell/nu_scripts/pull/239), and [Update ssh script for 0.63.0](https://github.com/nushell/nu_scripts/pull/238), and [Update make-completions.nu](https://github.com/nushell/nu_scripts/pull/232) - skelly37 created [Update checker for /etc/hosts](https://github.com/nushell/nu_scripts/pull/249), and [cdpath.nu -- more clear for windows](https://github.com/nushell/nu_scripts/pull/248), and [cdpath fixed for windows](https://github.com/nushell/nu_scripts/pull/247), and [cdpath.nu moved and improved](https://github.com/nushell/nu_scripts/pull/245) - Dan-Gamin created [Add `helpers` folder and add script for running C/C++ quickly](https://github.com/nushell/nu_scripts/pull/241), and [Add pwd-short to cool-oneliners](https://github.com/nushell/nu_scripts/pull/235), and [Add more cargo completions](https://github.com/nushell/nu_scripts/pull/233) - ehdevries created [Improve panache-git performance for changes with many files](https://github.com/nushell/nu_scripts/pull/240) - Jacobious52 created [generated nu completions from fish](https://github.com/nushell/nu_scripts/pull/237), and [autogenerate from Fish shell completions](https://github.com/nushell/nu_scripts/pull/236) - sholderbach created [Script to gather test coverage for nushell](https://github.com/nushell/nu_scripts/pull/234) - fdncred created [use default bg color for execution time](https://github.com/nushell/nu_scripts/pull/231) ## reedline - sholderbach created [Prepare 0.7.0 release](https://github.com/nushell/reedline/pull/440), and [Expose the `History` query functionality](https://github.com/nushell/reedline/pull/439), and [Update nu-ansi-term/update crate patch versions](https://github.com/nushell/reedline/pull/437), and [Fix clippy lints that will become warnings](https://github.com/nushell/reedline/pull/435), and [Organize the common keybindings](https://github.com/nushell/reedline/pull/433) - WindSoilder created [Don't panic when parent directory does not exist](https://github.com/nushell/reedline/pull/436) - Artturin created [Move ctrl+a & ctrl+e to common navigation binds](https://github.com/nushell/reedline/pull/434), and [Move some commonly used keybinds to common keybinds](https://github.com/nushell/reedline/pull/432) - phiresky created [SQLite History (third version)](https://github.com/nushell/reedline/pull/401)

This section summarizes updates to Nushell documentation, Nu_Scripts, and Reedline. Nushell documentation updates include: kubouch (config variable fix, overlay tips and chapter), and schuelermine (added `not` operator documentation). Nu_Scripts updates include: Yethal (branch protections, remoting.nu, ssh script, make-completions.nu), skelly37 (checker for /etc/hosts, cdpath improvements for Windows), Dan-Gamin (`helpers` folder, pwd-short, cargo completions), ehdevries (improved panache-git performance), Jacobious52 (fish shell completions), sholderbach (test coverage script), and fdncred (execution time color). Reedline updates include: sholderbach (0.7.0 release, exposed History query, updated nu-ansi-term, fixed clippy lints, organized keybindings), WindSoilder (panic fix for non-existent parent directory), Artturin (moved ctrl+a & ctrl+e and other keybinds), and phiresky (SQLite History).