[ImgBot] Optimize images

*Total -- 14,612.96kb -> 6,177.22kb (57.73%)

/misc/thresholding_sentinel2A/chilikha_ndwi_wc_t130.png -- 917.31kb -> 270.29kb (70.53%)
/misc/thresholding_sentinel2A/okeechobee_ndwi_lmc_t194.png -- 512.85kb -> 175.21kb (65.84%)
/misc/spectral_modulation_sentinel2A/Sentinel2A_TM_swir_water__Okeechobe_Sentinel.png -- 23.96kb -> 9.00kb (62.44%)
/misc/spectral_modulation_sentinel2A/Sentinel2A_TM_swir_water__Chilikha_Sentinel.png -- 7.57kb -> 2.86kb (62.21%)
/misc/thresholding_sentinel2A/okeechobee_ndwi_wc_t110.png -- 3,062.12kb -> 1,208.16kb (60.54%)
/misc/spectral_modulation_sentinel2A/Sentinel2A_TM_all_classes__Okeechobe_Sentinel.png -- 171.42kb -> 69.47kb (59.48%)
/misc/spectral_modulation_sentinel2A/Sentinel2A_TM_all_classes__Chilikha_Sentinel.png -- 99.87kb -> 41.32kb (58.63%)
/misc/thresholding_sentinel2A/okeechobee_ndci_t150.png -- 3,849.28kb -> 1,618.70kb (57.95%)
/misc/thresholding_sentinel2A/chilikha_ndci_t167.png -- 3,096.66kb -> 1,420.18kb (54.14%)
/misc/thresholding_sentinel2A/chilikha_ndwi_lmc_t144.png -- 2,871.93kb -> 1,362.04kb (52.57%)

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