[ImgBot] Optimize images

[imgbot[bot]]

Beep boop. Your images are optimized!

Your image file size has been reduced by 14% 🎉

Details

File	Before	After	Percent reduction
/docs/img/preview.png	762.26kb	584.03kb	23.38%
/ColorArtwork.playground/Resources/Discovery.jpg	82.55kb	75.35kb	8.72%
/Tests/ColorArtworkTests/Stadium Arcadium.jpg	117.15kb	111.99kb	4.41%
/ColorArtwork.playground/Resources/Too Weird To Live, Too Rare To Die!.jpg	86.21kb	82.41kb	4.41%
/ColorArtwork.playground/Resources/The Same Old Blood Rush With a New Touch.jpg	136.82kb	131.18kb	4.12%
/ColorArtwork.playground/Resources/Chuck.jpg	133.39kb	129.52kb	2.90%
/ColorArtwork.playground/Resources/Ghost Stories.jpg	83.07kb	80.69kb	2.86%
/ColorArtwork.playground/Resources/Making Mirrors.jpg	96.55kb	94.67kb	1.94%
Total :	1,498.00kb	1,289.85kb	13.89%

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