[ImgBot] Optimize images

[imgbot[bot]]

Beep boop. Your images are optimized!

Your image file size has been reduced by 16% 🎉

Details

File	Before	After	Percent reduction
/tooltipview/src/main/res/drawable/ic_tooltip_arrow_right.png	0.79kb	0.42kb	47.41%
/tooltipview/src/main/res/drawable/ic_tooltip_arrow_left.png	0.79kb	0.42kb	47.10%
/tooltipview/src/main/res/drawable/ic_tooltip_arrow_down.png	0.73kb	0.39kb	45.90%
/tooltipview/src/main/res/drawable/ic_tooltip_arrow_up.png	0.69kb	0.39kb	43.30%
/images/Screen Shot 2018-10-23 at 13.27.29.png	49.97kb	41.53kb	16.90%
/tooltipview/src/main/res/drawable-xxxhdpi/ic_tooltip_close.png	0.55kb	0.46kb	16.61%
/tooltipview/src/main/res/drawable-xxhdpi/ic_tooltip_close.png	0.41kb	0.41kb	0.95%
/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png	8.91kb	8.89kb	0.28%
Total :	62.84kb	52.90kb	15.83%

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