Revision history for Imager-Filter-Autocrop

1.22/1.23    08 Oct. 2016
             - Minor changes (speed improvements, early detection of no-crop and image-wide outlines).

1.20/1.21    07 Oct. 2016
              - Significant performance boost.
              - Fix for scan boundaries.
              - JPEG output quality can now be specified for autocrop.pl script.

1.10         06 Oct. 2016
             - It is now possible to override the name under which the filter is registered.
             - Utility script autocrop.pl has been added.
             - Markdown version of README has been added.

1.00         05 Oct. 2016
             - Initial version.