The files antifirmament_logo.png, antifirmament_logo_64x.png, and icon.png
are derivatives of the Firmament logo by ic22487.

Original: https://github.com/FirmamentMC/Firmament/blob/89bf14181af97000b07e34891599797bdb1b23d2/docs/firmament_logo_256.webp
Original license: CC-BY-4.0 (https://creativecommons.org/licenses/by/4.0/)
Modification: Red X overlay added by axle.coffee.
The original author does not endorse this project.