* cli: wip Add import command
* cli: wip Save bytes to out file
* cli: Update `export` for reader/writer interface
* cli: Update import for reader/writer interface
* cli: Add `atty` to check if stdin/out is a TTY
* cli: Require file path if not streaming in or out
* cli: Align naming of the binary changes file, whether in or out
* cli: Small documentation fixes
* cli: Allow specifying an input file for import
* cli: Add `duct` crate for testing
* cli: comment-out println that was showing up in output files
* cli: Add basic CLI tests for import, export, and import -> export
* cli: EOF NL
* cli: Remove a few redundant calls to clone
* cli: Move duct to dev-dependencies
* Remove debug message
