v0.9.0

bitar (lib)

• Fail early on invalid compression level.
• Provide error source with errors.
• Bump prost to 0.8, zstd to 0.9, bytes to 1.1.
• MSRV set to 1.51.

bita (bin)

• Print compression type with archive info.
• Fix: restore functionality of the bita compress --hash-length cli parameter.