[ImgBot] Optimize images

[imgbot[bot]]

Beep boop. Your images are optimized!

Your image file size has been reduced by 15% 🎉

Details

File	Before	After	Percent reduction
/assets/tri2.png	4.34kb	1.36kb	68.60%
/docs/image/search.png	12.41kb	5.85kb	52.85%
/examples/extrude/height1.png	22.90kb	11.52kb	49.70%
/assets/tri.png	6.67kb	3.39kb	49.22%
/examples/extrude/height2.png	15.98kb	8.57kb	46.37%
/assets/demo/chartlayer.png	42.93kb	23.72kb	44.76%
/docs/image/esdoc-logo-mini-black.png	5.52kb	3.06kb	44.47%
/assets/Biploar_shadow.png	16.31kb	11.09kb	32.01%
/assets/plane.png	19.37kb	13.53kb	30.19%
/docs/image/github.png	4.17kb	2.94kb	29.36%
/assets/[email protected]	85.18kb	61.10kb	28.27%
/assets/demo/sprite_demo.png	27.12kb	19.78kb	27.04%
/assets/drone.png	67.55kb	51.34kb	24.00%
/assets/sprite.png	30.86kb	23.96kb	22.35%
/docs/image/esdoc-logo-mini.png	6.35kb	5.30kb	16.59%
/assets/canvasLine.jpg	82.39kb	72.21kb	12.36%
/examples/rbush/vincent_sky.jpg	161.19kb	142.88kb	11.36%
/assets/logo.png	1.64kb	1.47kb	10.75%
/examples/extrude/sattelite.jpg	25.08kb	23.09kb	7.96%
/assets/demo/voxelworld.jpg	87.70kb	82.58kb	5.84%
/assets/2016112000.png	85.08kb	83.43kb	1.93%
/dist/skydome.jpg	244.80kb	244.78kb	0.01%
Total :	1,055.53kb	896.94kb	15.03%

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