2.1: bugfix and minor extensions

A little service release that does three things:

• fix a bug showing wrong colors when ANSIs make use of PabloDraw's non-standard RGB colors
• add more keybindings for zooming in and out (previously, the only way to do that was using the numerical keypad, but laptops and an increasing number of desktop keyboards lack these)
• add an application icon to the Windows build

PixelView is also an ANSI viewer now!

PixelView always had a few very peculiar features tailored to showing very tall images, like "zoom to top" (T key), auto-scrolling or panel mode. These features exist in order to be able to "mis-use" PixelView as an ANSI viewer by having AnsiLove render the ANSI art to PNG beforehand. This works quite well - the ANSI/ASCII compos at the Deadline 2022 and 2023 demoparties have been the ones with the smoothest glitch-free scrolling ever because of it! It's a bit cumbersome to use in that way, though; but this has come to an end: PixelView now integrates libansilove (the library part of AnsiLove) directly, making it possible to view .ans files without prior conversion. All the usual AnsiLove rendering options are accessible from PixelView's UI (Tab or F2 keys), but if the ANSI file contains a valid SAUCE record, it's rarely required to change anything there.

The only other major feature in this release is that the F3 key can now be used to enable a permanent filename and image resolution display.

initial public release

This is the fhe first feature-complete version.