Michael Dietrich

I have the following file: [zen_of_python_corrupted.pdf](https://github.com/claird/PyPDF4/files/2926503/zen_of_python_corrupted.pdf) According to the PDF's internal code the text content is somehow corrupted/compressed/differently encoded. However it works fine when opened with a PDF viewer. Now...

Currently the `addAttachment` function is able to embed one single file only. If this function is called for another file, an existing attachment is overwritten. It would be useful to...