[dev-context] attachments with PDF/A-3

[Pablo Rodriguez]

Dear list,

I have generated a PDF/A-3 compilant document, but as I add attachments
the validation from veraPDF warns about errors.

There are five issues, which I can document here. Sorry, but I’m afraid
I cannot provide patches.

Can we discuss these issues now, or is it better to wait until TeX Live
2019 has been released?

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk