Add license header to display_utils.rs and pretty_print.rs (#1887)

Add license header to display_utils.rs and pretty_print.rs (#1887)

Prepare for `0.57.0` release (#1885)

Update `56.0.0` Changelog with latest commits (#1832)

Update `56.0.0` Changelog with latest commits (#1832)

Prepare for 55.0.0 release: Version and CHANGELOG (#1750)

Co-authored-by: Ophir LOJKINE <[email protected]>

Prepare for 55.0.0 release: Version and CHANGELOG (#1750)

Co-authored-by: Ophir LOJKINE <[email protected]>

Update rat_exclude_file.txt

Update rat_exclude_file.txt

Run cargo fmt in derive crate