[ImgBot] Optimize images - #5

*Total -- 2,083.78kb -> 1,891.37kb (9.23%)

/public/lang-logo.png -- 2.24kb -> 1.42kb (36.81%)
/public/images/sequences.png -- 183.90kb -> 136.17kb (25.95%)
/public/main-image.png -- 129.48kb -> 101.10kb (21.92%)
/public/images/andrewNg.png -- 86.72kb -> 68.31kb (21.23%)
/public/images/efficiency.png -- 56.47kb -> 44.77kb (20.72%)
/public/images/cnn.png -- 150.48kb -> 121.04kb (19.57%)
/public/images/regression.png -- 68.96kb -> 56.90kb (17.49%)
/public/node.svg -- 1.60kb -> 1.33kb (16.44%)
/public/images/fig-1-ff-nn.png -- 23.18kb -> 20.42kb (11.92%)
/src/figures/fig-1-ff-nn.png -- 23.18kb -> 20.42kb (11.92%)
/public/images/wall-e-rubik.jpg -- 56.36kb -> 50.48kb (10.43%)
/public/data/services/image-analysis/sign-001.jpg -- 39.78kb -> 36.08kb (9.32%)
/public/data/services/image-analysis/sign-002.jpg -- 33.00kb -> 30.45kb (7.72%)
/public/images/montezuma.png -- 60.51kb -> 57.29kb (5.33%)
/public/images/ai-stock.jpg -- 625.93kb -> 609.68kb (2.6%)
/public/data/services/image-analysis/city-skyline-001.jpg -- 32.92kb -> 32.14kb (2.36%)
/public/data/services/image-analysis/protest-002.jpg -- 47.05kb -> 46.04kb (2.15%)
/public/bootstrap/fonts/glyphicons-halflings-regular.svg -- 106.19kb -> 103.92kb (2.14%)
/public/data/services/image-analysis/protest-001.jpg -- 40.51kb -> 39.83kb (1.66%)
/public/images/darthmouth.jpg -- 24.45kb -> 24.22kb (0.93%)
/public/404.png -- 131.62kb -> 130.63kb (0.76%)
/public/images/nn_example-624x218.png -- 159.26kb -> 158.74kb (0.32%)

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