[ANN] Guile-PNG 0.7.3 released

[Artyom V. Poptsov]

Hello Guilers,

I'm pleased to announce Guile-PNG 0.7.3, Portable Network Graphics
(PNG)[1] library for GNU Guile, implemented in pure scheme:
  https://github.com/artyom-poptsov/guile-png/releases/tag/v0.7.3

This release adds procedures that allow to rotate images 90 degrees
clockwise/counter-clockwise, flip images vertically and horizontally and
introduces new high-level API for manipulating image pixels.

* List of user-visible changes

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* Changes in version 0.7.3 (2024-03-30)
** Implement image transformation methods
The methods below can be found in =(png image-processing rotate)= module:
- =png-image-rotate-90/cw=: 90 degrees clockwise rotation
- =png-image-rotate-90/ccw=: 90 degrees counter-clockwise rotation
- =png-image-flip-vertical=: Vertical flip.
- =png-image-flip-horizontal=: Horizontal flip.
** New high-level API for manipulating image pixels
=(png graphics pixel)= now provides two high-level procedures for manipulating
the image pixels:
- =png-image-pixel-for-each=
- =png-image-pixel-map=
- =png-image-pixel-fold=
** Update and improve the documentation
** Add new tests
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Happy hacking!

- avp


References:
1. https://www.rfc-editor.org/rfc/rfc2083

-- 
Artyom "avp" Poptsov <poptsov.artyom@gmail.com>
Home page: https://memory-heap.org/~avp/
CADR Hackerspace co-founder: https://cadrspace.ru/
GPG: D0C2 EAC1 3310 822D 98DE  B57C E9C5 A2D9 0898 A02F

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