**Fixed**
- [15]: use `isinstance()` instead of `type()` (by begert)
- [20]: `print` on python 3 (by lukasbindreiter)
**Changed**
- [19]: upgraded to python 3 (by arjndr)
- [23]: supported python version (3.8, 3.9, 3.10, 3.11)
- [24]: directory structure (`src` layout, using `pyproject.toml`) and other cleanup
**Added**
- [13]: prompt for password for encrypted PDFs (if not supplied on CLI)
- [21]: complete docs in `--help`
**Removed**
- [25]: Windows-specific builds
- `pdfmerge.add`, `pdfmerge.merge`
---
[12]: https://github.com/metaist/pdfmerge/pull/12