Update to 4.0.1

[nickgerace]

Functional:

• Update "Cargo.toml" version to 4.0.1
• Bump all packages
• Add warnings check to "cargo doc" in CI
• Remove bash scripts (install and uninstall) and move their logic to markdown docs

Docs:

• Move download and install from source instructions to their own file
• Add "cargo doc" warnings check to dev docs
• Rename scripts to performance testing scripts where mentioned
• Add "quiet" flag to "cargo run" for scripts

Closes #198 Closes #201

[nickgerace]

bors merge

[bors[bot]]

Build succeeded:

• Lint / Test / Build (ubuntu-latest)
• Test / Build (macos-latest)
• Test / Build (windows-latest)