[ImgBot] Optimize images

*Total -- 19,044.27kb -> 16,213.37kb (14.86%)

/images/avatar.png -- 15.21kb -> 6.60kb (56.63%)
/images/landing-header.png -- 1,964.87kb -> 903.99kb (53.99%)
/images/Energy/ElemMath/workDoneDotProd.png -- 286.65kb -> 154.26kb (46.18%)
/images/FontLove/firacode_demo.png -- 12.99kb -> 8.53kb (34.31%)
/images/Energy/ElemMath/additionOfVecs.png -- 122.37kb -> 86.34kb (29.44%)
/images/LambdasInCPP/bg.jpg -- 16.63kb -> 11.95kb (28.12%)
/images/FontLove/bg.jpg -- 129.19kb -> 97.59kb (24.45%)
/images/prime-bg.jpg -- 129.19kb -> 97.59kb (24.45%)
/images/ComputerBugsHappening/header.jpg -- 5,949.74kb -> 5,219.42kb (12.27%)
/images/ComputerBugsHappening/bg.jpg -- 3,597.35kb -> 3,193.53kb (11.23%)
/images/Energy/Essence/header1.jpg -- 1,067.17kb -> 957.76kb (10.25%)
/images/about-bg.jpg -- 491.64kb -> 445.38kb (9.41%)
/images/Energy/Essence/bg1.jpg -- 1,387.87kb -> 1,295.13kb (6.68%)
/assets/preloader.gif -- 829.70kb -> 788.75kb (4.94%)
/images/WorkVectorCalc/work_6.svg -- 5.11kb -> 4.90kb (4.09%)
/images/Infinity/feature.jpg -- 2,196.70kb -> 2,108.54kb (4.01%)
/images/WorkVectorCalc/xsquared.svg -- 25.11kb -> 24.59kb (2.07%)
/images/WorkVectorCalc/xsquared_scalarfield.svg -- 23.73kb -> 23.26kb (1.97%)
/images/ComputerBugsHappening/bug.jpg -- 16.93kb -> 16.64kb (1.74%)
/assets/fonts/fontawesome-webfont.svg -- 357.05kb -> 352.24kb (1.35%)
/images/FontLove/header1.jpg -- 110.77kb -> 109.63kb (1.03%)
/images/CommentSysUpdate1/header.jpg -- 297.34kb -> 295.77kb (0.53%)
/images/GIARevamp/header.svg -- 1.00kb -> 1.00kb (0.39%)
/images/Energy/ElemMath/directiondimensions.svg -- 3.24kb -> 3.23kb (0.15%)
/images/Energy/ElemMath/mayTheDirBeWithYou.svg -- 6.74kb -> 6.73kb (0.03%)

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