Address issue reported by Nightfox via DOVE-Net:
Today I was using the Archive class to extract exactly one file from a zip
file, and I'm a little confused on the exception throwing behavior regarding
the max_files parameter.  When calling extract(), I gave it a filename pattern
and expected exactly 1 file to be extracted, so I also gave a max_files
argument as 1.  It extracted the one file, but it threw an exception with the
error "Error: maximum number of files (1) extracted (after extracting 1 item
successfully)".

Should that be an error condition to throw an exception? I expected 1 file to
be extracted, and that file was extracted successfully.  If I specify max_files
as 2, then it doesn't throw an exception.