Pdfcropmargins

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Bug fixes:

* Added typing dependency for GUI with Python <= 3.4.

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New features:

* Added a graphical user interface (GUI) which allows PDF files to be interactively
cropped with different settings without having to re-render the pages.

* An option ``--pageRatiosWeights`` which also takes per-margin weights to determine
what proportion of the necessary padding to apply to each margin.

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New features:

* An option ``--uniformOrderStat4`` (shortcut ``-m4``) has been added to allow
setting the order statistic (for how many smallest delta values to ignore)
individually for each margin.

* Verbose mode now prints out the pages on which the smallest delta values were
found, for better tuning of crop commands.

Bug fixes:

* Fixed a bug in the interaction of the ``-u``, ``-pg``, and ``-e`` options.

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New Features:

* Now copies over data from the document catalog to the cropped document.
This includes, for example, the outline or bookmarks.

* There is a new option ``--docCatBlacklist`` (shortcut ``-dcb``) which can
be used to block any particular item from being copied. The default is
an empty string, which copies everything possible. To revert to the
previous behavior of pdfCropMargins you can set ``-dcb "ALL"``. See
the program's help option ``-h``.

* There is another new option ``--docCatWhitelist`` (shortcut ``dcw``) which
is a list of document catalog items to always try to copy over. This
list overrides the blacklist.

* There is a new option to use an order statistic in choosing the page size for
the ``--samePageSize`` option. The argument is the number ``n`` of pages to
ignore in each edge calculation. The option is ``--samePageSizeOrderStat``
(shortcut ``-ms``). See the program's help option ``-h``.

* Added a new option ``--setPageRatios`` (shortcut ``-spr``) which allows the
width to height ratios of the final pages to be set. Either top and bottom
or left and right margins will be increased after the usual cropping to
give the chosen ratio.

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* Changed code to better PEP-8 naming.

* Fixed issue where return codes were not being returned correctly on failure.

* Modified ``samePageSize`` option to only apply to pages selected by the ``pages`` option.

* Option ``-pg`` is now another synonym for ``--pages``.

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* Minor edits to documentation.