[ImgBot] Optimize images

[imgbot[bot]]

Beep boop. Your images are optimized!

Your image file size has been reduced by 19% 🎉

Details

File	Before	After	Percent reduction
/docs/snapping.png	4.77kb	1.31kb	72.42%
/docs/tree-shot2.png	3.30kb	0.97kb	70.77%
/docs/tree-shot1.png	3.58kb	1.05kb	70.72%
/docs/layout-saving-1.png	14.45kb	4.41kb	69.48%
/docs/two_columns.png	4.52kb	1.39kb	69.31%
/docs/modes.png	5.69kb	1.79kb	68.49%
/docs/tree-shot4.png	2.98kb	0.95kb	68.13%
/docs/stacklimit.png	4.87kb	1.57kb	67.78%
/docs/two_terminals.png	4.79kb	1.58kb	67.09%
/docs/single_terminal.png	3.30kb	1.18kb	64.37%
/docs/tree-shot3.png	3.91kb	1.42kb	63.73%
/docs/bigpicture.png	8.96kb	3.78kb	57.79%
/contrib/sticker_stickma_black.svg	28.42kb	18.67kb	34.30%
/contrib/banner.svg	26.57kb	17.55kb	33.96%
/docs/NoName-2009-03-12/screenshot.png	121.00kb	82.81kb	31.56%
/docs/GPN-2009-06-27/screenshot.png	121.00kb	82.81kb	31.56%
/logo.svg	26.22kb	18.18kb	30.66%
/docs/GPN-2009-06-27/xft.jpg	44.41kb	32.51kb	26.81%
/docs/keyboard-layer1.png	54.51kb	40.49kb	25.73%
/docs/keyboard-layer2.png	48.69kb	36.33kb	25.38%
/docs/i3-sync-working.png	24.48kb	20.63kb	15.75%
/docs/i3-sync.png	16.90kb	14.27kb	15.60%
/docs/wsbar.png	14.00kb	12.58kb	10.15%
/docs/tree-layout1.png	27.20kb	24.47kb	10.06%
/docs/slides-2012-01-25/Ubuntu_Linux_Jaunty_screenshot.png	271.55kb	247.49kb	8.86%
/docs/slides-2012-03-16/Ubuntu_Linux_Jaunty_screenshot.png	271.55kb	247.49kb	8.86%
/docs/tree-layout2.png	19.63kb	17.89kb	8.86%
/docs/keyboard-layer1.svg	124.83kb	114.19kb	8.53%
/docs/keyboard-layer2.svg	128.78kb	119.23kb	7.41%
Total :	1,434.88kb	1,168.96kb	18.53%

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