Changelog

• Rework the theming system
• Rework the long theme
• Declutter Elements and display.rs
• Remove objc runtime and use sysctl to get os version to improve performance on macOS
• Add documentation for theme.rs
• Add macOS and NetBSD benchmarks to README
• Add more Windows metrics and fix its compilations errors
• Add support for APK (Alpine Linux) package manager
• Fix an issue where a bar's unused glyphs (when using --no-color flag) are not hidden for some terminals, e.g. Kitty.
• Remove "To be filled by O.E.M." from machine information on certain computers
• ripgrep should no longer print any error messages to the terminal on NetBSD
• Use type-safe command line parsing with StructOpt and Clap
• Move dependencies section of README files to the bottom
• Other miscellaneous changes and improvements