[ImgBot] Optimize images (#35)

*Total -- 5,108.93kb -> 4,291.99kb (15.99%)

/themes/hugo-theme-learn/static/images/favicon.png -- 1.22kb -> 0.59kb (51.48%)
/themes/hugo-theme-learn/exampleSite/content/basics/installation/images/chapter.png -- 85.71kb -> 46.66kb (45.56%)
/themes/hugo-theme-learn/exampleSite/content/cont/pages/images/pages-chapter.png -- 243.33kb -> 152.42kb (37.36%)
/themes/hugo-theme-learn/exampleSite/content/basics/style-customization/images/red-variant.png -- 380.82kb -> 239.39kb (37.14%)
/themes/hugo-theme-learn/exampleSite/content/basics/style-customization/images/blue-variant.png -- 380.01kb -> 238.93kb (37.13%)
/themes/hugo-theme-learn/exampleSite/content/basics/style-customization/images/green-variant.png -- 381.74kb -> 240.20kb (37.08%)
/themes/hugo-theme-learn/exampleSite/content/cont/pages/images/pages-default.png -- 310.79kb -> 196.47kb (36.78%)
/themes/hugo-theme-learn/exampleSite/static/images/showcase/tat.png -- 405.21kb -> 302.69kb (25.3%)
/static/logo.png -- 27.36kb -> 22.90kb (16.31%)
/themes/hugo-theme-learn/static/images/gopher-404.jpg -- 215.36kb -> 201.42kb (6.47%)
/themes/hugo-theme-learn/static/fonts/Novecentosanswide-Normal-webfont.svg -- 100.88kb -> 96.30kb (4.54%)
/themes/hugo-theme-learn/static/fonts/Novecentosanswide-UltraLight-webfont.svg -- 93.99kb -> 89.81kb (4.44%)
/themes/hugo-theme-learn/static/fonts/fontawesome-webfont.svg -- 433.96kb -> 425.36kb (1.98%)
/themes/hugo-theme-learn/static/fonts/Work_Sans_500.svg -- 54.16kb -> 53.15kb (1.88%)
/themes/hugo-theme-learn/static/fonts/Work_Sans_300.svg -- 54.52kb -> 53.50kb (1.87%)
/themes/hugo-theme-learn/static/fonts/Work_Sans_200.svg -- 54.57kb -> 53.55kb (1.87%)
/themes/hugo-theme-learn/static/fonts/Inconsolata.svg -- 61.54kb -> 60.54kb (1.63%)
/themes/hugo-theme-learn/static/images/clippy.svg -- 0.51kb -> 0.50kb (1.16%)
/themes/hugo-theme-learn/images/tn.png -- 141.37kb -> 139.98kb (0.99%)
/themes/hugo-theme-learn/exampleSite/static/fonts/monogramos-webfont.svg -- 257.41kb -> 256.00kb (0.55%)
/themes/hugo-theme-learn/exampleSite/content/basics/requirements/images/magic.gif -- 1,424.47kb -> 1,421.65kb (0.2%)

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