oxipng-9.1.0-bp160.1.14

- Add man pages

- Update to version 9.1.0:
  * Add --keep display equivalent to --strip safe.
  * Add modified zeng palette sorting method, improving optimization of indexed images.
  * If only one filter is specified, guarantee to only use this one.
  * Evaluate low-depth indexed even if low-depth grayscale was already achieved.
  * Fix battiato palette sorting method not being used if the input was not already indexed.
  * Fix rare crash caused by a truncated palette.
  * Reduce size of binaries.
  * Add man page generation.

- Update to version 9.0.0:
  * Overhaul help
  * Tidy some issue tests
  * Add test
  * Combine palette reduction and sorting
  * Update `zopfli` to v0.8.0
  * Bump actions/checkout from 3 to 4
  * Remove libdeflate slack space no longer needed
  * Update libdeflater
  * Remove `backup` and `check` options

- Replace rust-packaging with cargo-packaging after the rename

- initial package