Credits

Included in Imagecat

Cynthia A. Brewer, “ColorBrewer: Color Advice for Maps,” http://colorbrewer2.org, accessed October, 2014.

Tyler Finck, “League Spartan” TrueType font https://github.com/theleagueof/league-spartan:

Copyright (c) 2016-2020, Tyler Finck <hi@tylerfinck.com>

Copyright (c) 2014, Micah Rich <micah@micahrich.com>,
with Reserved Font Name: "League Spartan".

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL

Version 1.1 - 26 February 2007

Jason Summers, “A close look at the sRGB formula” https://entropymine.com/imageworsener/srgbformula, accessed November, 2020.