Pdfcombine

What's Changed
* Style update by tdegeus in https://github.com/tdegeus/pdfcombine/pull/21
* Renaming tests by tdegeus in https://github.com/tdegeus/pdfcombine/pull/23
* Using setuptools_scm for version management by tdegeus in https://github.com/tdegeus/pdfcombine/pull/22
* Use UTF-16BE encoding for bookmark titles by palto42 in https://github.com/tdegeus/pdfcombine/pull/26
* Upgrading setup by tdegeus in https://github.com/tdegeus/pdfcombine/pull/28

New Contributors
* palto42 made their first contribution in https://github.com/tdegeus/pdfcombine/pull/26

**Full Changelog**: https://github.com/tdegeus/pdfcombine/compare/v1.1.4...v1.1.5

* Printing command before it is executed

Fixing typo that inhibited the selection of second YAML mode (with only filenames).

Command-line, YAML, and Python APIs are now provided.