Nix package via nix flakes

Added

• Nix flake for compilation and development environments

Fixed

• Tests in the crate::path::clean module now pass on Linux systems that don't have /usr/ as a top-level directory
  • This was discovered when trying to build a Nix package

Changes: v0.2.5...v0.2.6
Full Changelog: https://github.com/jrhawley/pad-path/CHANGELOG.md

Minor bugfixes

Fixed

• Testing on Arch Linux no longer fails due to a symlink in /usr/lib/ (see #1, thanks @thecakeisalie25)
• Removed erroneous echo alias for the revert subcommand

Changed

• Upgraded from home to dirs-next crate to follow the XDG Base Directories and XDG User Directories specifications
• Upgraded to clap v4

v0.2.3

• Prepending a duplicate directory with pad add no longer leaves two copies of the directory in $PATH when forced.
• Removing a directory not found in $PATH properly raises a warning.
• Other errors that should have been raised are now raising correctly.

v0.1.7

Windows release

v0.1.6

Windows release

v0.1.4.1

Windows release