bytejoin-cli v1.0.0

Initial release of bytejoin-cli.

• Merge split files locally from the terminal
• Supports .pkg, .001, .bin, and other raw byte chunks
• Auto-detects likely file groups
• Lets users rename the output before merging
• Shows progress, speed, elapsed time, and ETA
• Warns about missing parts and suspicious file sizes
• Includes tiny demo files for testing
• No external Python packages required