Pycpio

Add testing, read file uid/gid from imported files, improve logging, improve comments, add compression cmdline arg.


What's Changed
* Tests by desultory in https://github.com/desultory/pycpio/pull/4
* add more test cases by desultory in https://github.com/desultory/pycpio/pull/5
* Tests by desultory in https://github.com/desultory/pycpio/pull/6

**Full Changelog**: https://github.com/desultory/pycpio/compare/1.2.1...1.3.0

Improve error handling and logging.

**Full Changelog**: https://github.com/desultory/pycpio/compare/1.2.0...1.2.1

Add experimental reproducible image builds.

**Full Changelog**: https://github.com/desultory/pycpio/compare/1.1.6...1.2.0

Improve argument parsing.

**Full Changelog**: https://github.com/desultory/pycpio/compare/1.1.5...1.1.6

Fix typo in variable name.

**Full Changelog**: https://github.com/desultory/pycpio/compare/1.1.3...1.1.4

Show file size in MiB.

Use XZ compression when compression is set to "True"

**Full Changelog**: https://github.com/desultory/pycpio/compare/1.1.2...1.1.3