* erster Aufschlag für includepdf
* beispiel.md: added comment for skipfirstpage
* integrate changes as suggested in pandoc issue: https://github.com/jgm/pandoc/issues/6259#issuecomment-955747860
* Modified readme.md to cater for the possibility to include ranges from PDF files
* Forgot the exmaple block at begin of README.md - updated it m(
* typo inf README.md - updated it m(
Co-authored-by: Sebastian / sebbo <sebastian@1337lounge.de>
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