RM-ImProved 0.14.0

Major refactor of RM-ImProved (first time in 4 years)

Major Changes

• Upgraded edition to Rust 2021
• Refactored arguments to use Clap 4.x (Derive API)
• Refactored the main program as a whole

Changelog by Git Cliff

Bug Fixes

• Set graveyard permissions to 700

Miscellaneous Tasks

• Removed CI

Refactor

• Refactored code inclusion to use modules
• Modernize module imports in main.rs
• First pass of refactoring in main.rs
• Overhaul arguments

Styling

• Applied rustfmt