• [Breaking] Bump minimum Rust version to 1.57.0
• [Feature] Add --check/-c CLI option
• [Security] Update stderrlog to 0.5.2 (Fixes RUSTSEC-2022-0006)
• [Security] Remove chrono as a transitive dependency (Fixes RUSTSEC-2020-0159)
• [Misc] Bump clap to 3.2
• [Misc] Bump zopfli to 0.7
• [Misc] Bump libdeflater to 0.10
• [Misc] Remove byteorder dependency in favor of stdlib functions
• [Misc] Bump image to 0.24
• [Misc] Bump crc to 3.0
• [Misc] Bump miniz_oxide to 0.6
• [Misc] Update to Rust edition 2021
• [Misc] Various internal improvements