Log message:
graphics: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Log message:
graphics: Remove SHA1 hashes for distfiles

Log message:
gifsicle: Update to 1.93.

## Version 1.93 - 30.Jun.2021

* Fix security bug on certain resize operations with `--resize-method=box`.

* Fix problems with colormapless GIFs.

Log message:
gifsicle: Update to 1.92

## Version 1.92 – 18.Apr.2019

* Add `--lossy` option from Kornel Lipiński.

* Remove an assertion failure possible with `--conserve-memory` + `--colors` +
  `--careful`.

Log message:
all: migrate homepages from http to https

pkglint -r --network --only "migrate"

As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.

Log message:
Update to 1.91. From the changelog:

* Several security bug fixes with malicious GIFs.
* Kill a use-after-free error reported by @junxzm1990.
* Add SIMD support for resizing. When enabled this improves resize
  performance enormously for complex resize methods.
* Add thread support for resizing. `-j[NTHREADS]` tells gifsicle to use
  up to NTHREADS threads to resize an input image. There are several
  caveats---multiple threads can be only used on unoptimized images.
  Thanks to Github user @wilkesybear.
* Quashed several crashes and undefined behaviors. Thanks to Github users
  including @pornel, @strazzere, and @b0b0505.
* Minor bug fixes.

Log message:
Updated gifsicle to 1.88.

Version 1.88   1.Jul.2015

* Fix bug where long comments were read incorrectly. Reported by
  kazarny.

* Add --no-ignore-errors option.

Version 1.87   9.Dec.2014

* Always optimize as if the background is transparent. This fixes some
  rare bugs reported by Lars Dieckow.

* Fix --crop issue with must-be-preserved frames that are out of the
  crop window.

Version 1.86   14.Oct.2014

* Further fix --rotate + --crop.

Version 1.85   14.Oct.2014

* Greatly improve optimization time for images with many colors.

* Add --no-extensions (with the s) and document those options more.

* Fix bug in interaction of --resize and --rotate reported by Michał
  Ziemba.

Version 1.84   29.Jun.2014

* Correct optimizer bug that affected GIFs with 65535 or more total
  colors. Reported by Jernej Simončič.

Version 1.83   21.Apr.2014

* Correct bug in custom gamma values reported by Kornel Lesiński.

* Update Windows build.

Version 1.82   27.Mar.2014

* Correct bug in `mix` sampling method reported by Bryan Stillwell.

Version 1.81   24.Mar.2014

* Correct bug in `mix` sampling method reported by Bryan Stillwell.

Version 1.80   18.Mar.2014

* Bug fixes and improved error messages.

Version 1.79   17.Mar.2014

* Major improvements in image scaling. Work sponsored by Tumblr via
  Mike Hurwitz.

** Add new resize sampling methods `mix`, `box`, `catrom`, `mitchell`,
   `lanczos2`, and `lanczos3`, selectable by `--resize-method`. The
   `catrom` filter often gives good results; the slightly faster `mix`
   method (a bilinear interpolator) is now the default. These new
   sampling methods consider all of the image's input colors when
   shrinking the image, producing better, less noisy output for most
   images.

** Add `--resize-colors`, which allows Gifsicle to enlarge the palette
   when resizing images. This is particularly important when shrinking
   images with small colormaps---e.g., shrinking a black-and-white
   image should probably introduce shades of gray.

* Support extensions such as XMP4 in which extension packet boundaries
  matter. Reported by `ata4`.

* Many bug fixes, especially to cropping. Thanks to Tumblr and to
  Bryan Stillwell, Tal Lev-Ami, "Marco," and others.

Log message:
Add SHA512 digests for distfiles for graphics category

Problems found with existing digests:
	Package fotoxx distfile fotoxx-14.03.1.tar.gz
	ac2033f87de2c23941261f7c50160cddf872c110 [recorded]
	118e98a8cc0414676b3c4d37b8df407c28a1407c [calculated]
	Package ploticus-examples distfile ploticus-2.00/plnode200.tar.gz
	34274a03d0c41fae5690633663e3d4114b9d7a6d [recorded]
	da39a3ee5e6b4b0d3255bfef95601890afd80709 [calculated]

Problems found locating distfiles:
	Package AfterShotPro: missing distfile AfterShotPro-1.1.0.30/AfterShotPro_i386.deb
	Package pgraf: missing distfile pgraf-20010131.tar.gz
	Package qvplay: missing distfile qvplay-0.95.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Update to 1.78. From the changelog:

* Correct an optimization bug introduced in 1.76. Reported by Tom
  Roostan.
* Major improvements to color selection (important when reducing
  colormap size). Use gamma-corrected colors in selection and
  dithering; this makes image quality much better. Also, when reducing
  colors with dithering, prefer to select colors that dithering can't
  approximate.
* Add ordered dithering modes, which avoid animation artifacts. The
  default ordered dithering mode (`--dither=ordered`) is a novel mode
  that combines some of the visual advantages of error diffusion with
  the artifact avoidance of ordered dithering.
* Add halftone dithering (`--dither=halftone`).
* gifview: Improved cache memory management for better animations.
  Collect memory for old frames based on an explicit --memory-limit
  (default 40MB).
* gifview: Add `--fallback-delay` option, to specify a fallback delay
  for frames with delay 0. Thanks to Sung Pae.
* Fix `-O2` crashes introduced with `--resize` improvements. Reported
  by Bryan Stillwell.
* Improve `--careful` (fewer crashes). Reported by Bryan Stillwell.
* Improve `-O2`: again, don't refuse to optimize images with local
  color tables. Reported by Bryan Stillwell.
* Greatly improve `--dither` speed.
* Improve `--resize` behavior: avoid animation artifacts due to
  different rounding decisions. Also speed it up. Reported by Bryan
  Stillwell.
* Fix bug where `-O2` would refuse to optimize some images with local
  color tables, claiming that "more than 256 colors were required".
  What was really required is previous disposal. Reported by Bryan
  Stillwell.
* Fix crash bugs on some combinations of `--crop` and `--resize`
  (prevalent on images whose first frame didn't cover the whole
  logical screen). Reported by Bryan Stillwell.

Log message:
Changes 1.71:
* Avoid rounding errors in '--resize'.
* Report error when '-I' is combined with '-b'.
* Frame selections also apply in batch mode.