OpenSystemsDevelopment / qpdf

Thanks to github user @cdosborn for the basic enhancement.

Also, silently fix any angle that is a multiple of 90.

... to remove the /Root /StructTreeRoot and /MarkInfo entries.

Add new private Util.hh header to define inline functions and expose as
ordinary functions in QUtil.

This improves indentation of long strings. This commit also fixes some
trailing whitespace in ChangeLog.

This requires a special build option.

This reverts commit ff2a78f579ebdd06b417e34260a17dba06e71137, reversing
changes made to 8f54319f7a6514110f4b05cbbf1cb1c9fc8cb6a0.

Add new commands --remove-metadata and --remove-info

A file that has Widget annotations that can't be mapped back to form
fields would crash qpdf json.

Accept --file and --range as named parameters in additional to
allowing positional arguments. This is in preparation for adding
additional flags.

The check for the number of items was in the wrong place.

Rather than adding yet another flag that is almost never useful on its
own, just have --remove-restrictions disable digital signatures. The
operations are still separate in the API.

Fix exit code when an input other than the primary input generates wa…

m-holger's fix is better

This reverts commit fa3cdaf1b46dcbb583393f93a02f89207ba21a88.

Ensure copied annotations are fixed (fixes #600)

Case where pages from a main input without /AcroForm key were duplicated
was omitted