[ImgBot] Optimize images

*Total -- 1,446.51kb -> 1,171.74kb (19%)

/projects/GeoGame/images/south-america.png -- 64.39kb -> 40.21kb (37.55%)
/projects/GeoGame/images/americas.png -- 113.40kb -> 71.89kb (36.6%)
/projects/twentyquestions/rubic.png -- 171.65kb -> 122.60kb (28.58%)
/projects/GeoGame/images/middle-east.png -- 74.64kb -> 55.35kb (25.84%)
/projects/GeoGame/images/asia-pacific.png -- 78.75kb -> 59.14kb (24.9%)
/projects/GeoGame/images/north-america.png -- 32.58kb -> 24.76kb (23.99%)
/projects/GeoGame/images/central-america.png -- 68.78kb -> 56.04kb (18.53%)
/projects/GeoGame/images/europe.png -- 158.31kb -> 131.09kb (17.19%)
/projects/GeoGame/images/france.jpeg -- 35.62kb -> 30.48kb (14.41%)
/projects/GeoGame/images/germany.jpeg -- 35.66kb -> 30.55kb (14.32%)
/projects/GeoGame/images/kenya.jpeg -- 35.87kb -> 30.74kb (14.29%)
/projects/GeoGame/images/egypt.jpeg -- 35.62kb -> 30.54kb (14.27%)
/projects/GeoGame/images/mexico.jpeg -- 36.55kb -> 31.43kb (14.01%)
/projects/GeoGame/images/india.jpeg -- 36.38kb -> 31.29kb (14%)
/projects/GeoGame/images/china.jpeg -- 37.32kb -> 32.26kb (13.54%)
/projects/GeoGame/images/usa.jpeg -- 38.39kb -> 33.39kb (13.03%)
/projects/GeoGame/images/africa.jpeg -- 34.24kb -> 30.32kb (11.46%)
/projects/GeoGame/images/uk.jpeg -- 45.80kb -> 40.64kb (11.28%)
/projects/GeoGame/images/japan.jpeg -- 46.09kb -> 40.95kb (11.14%)
/projects/GeoGame/images/cow.jpeg -- 64.87kb -> 59.26kb (8.64%)
/projects/GeoGame/images/pig.jpeg -- 86.95kb -> 80.33kb (7.61%)
/projects/GeoGame/images/kitten.jpeg -- 51.43kb -> 47.65kb (7.36%)
/projects/GeoGame/images/reindeer.jpeg -- 36.02kb -> 33.70kb (6.47%)
/projects/GeoGame/images/world.jpeg -- 8.81kb -> 8.74kb (0.89%)
/projects/GeoGame/images/dog.jpeg -- 18.38kb -> 18.38kb (0.02%)

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