Fixup v0.3.0 Cargo.lock

Fixup: v0.3.0 had Cargo.lock mismatch with Cargo.toml

Text-based QR codes, MSRV 1.42.0

Added

• qrxfil exfil now supports --txt for UTF8 textfile encoding #29
• New PDF-generating test checking created PDF has > 1 page

Changed

• MSRV bump in CI to 1.42.0 (from 1.40.0) for new PDF test

Add CSV import, PDF export

Added

• qrxfil pdfprint command to split file into PDF pages for paper backups #11
• qrxfil restore now supports --csv for semicolon-delimited exports from BinaryEye #22
• Refactored encoding to use iterators for generation of chunks #21

Initial release

Added

• qrxfil as debian package via cargo deb
• qrxfil exfil command to split file into chunks
• qrxfil restore command to restore decoded chunk strings into file
• Out of order chunks restore OK #13
• Missing chunks error-out #14
• Duplicate chunks restore OK unless payload mismatches #17