Stop Image XObjects being included as empty strings in PDFObject::getTextArray().

[rupertj]

Fix for #733 and #767.

This PR stops Image XObjects being included in the results of PDFObject:: getTextArray() as empty strings.

[k00ni]

Thank you for your PR.

Is it still work in progress?

If not, there are a few tasks left to solve before I take a closer look. Please read https://github.com/smalot/pdfparser/blob/master/CONTRIBUTING.md for more information.

[rupertj]

Thanks for pointing me to that @k00ni. I've fixed the code style issues and added test coverage for the change.

I think this is ready to be reviewed.

[k00ni]

The PR looks good.

I was wondering why it didn't show any CI test results, but found that Github doesn't support Windows 2019 anymore in the workflows (actions/runner-images#12045 (comment)).

#776 should solve that. After it was merged into master, I can give you a hint so you can merge it. Afterwards we should see if the CI has any complains.

[k00ni]

Please merge in the current master branch to trigger our CI.

[rupertj]

Thanks @k00ni - I've done that now. Could you approve the CI run please?

[k00ni]

This PR is good to go, but I wanna make sure we are not closing issues by accident. That's why I asked there for some feedback.

[daniser]

Do this PR also close #761?

[k00ni]

Do this PR also close #761?

It should, yes.