[ImgBot] Optimize images

*Total -- 6,764.14kb -> 5,609.52kb (17.07%)

/resources/pgs/star2.gif -- 261.16kb -> 98.36kb (62.34%)
/resources/examples/slice.png -- 18.32kb -> 7.55kb (58.8%)
/resources/examples/voronoiCutout.png -- 433.73kb -> 295.93kb (31.77%)
/resources/examples/contourMap.png -- 532.20kb -> 365.45kb (31.33%)
/resources/examples/triangulate.png -- 232.99kb -> 165.12kb (29.13%)
/resources/examples/drawOffsetCurves.png -- 195.60kb -> 144.05kb (26.36%)
/resources/examples/partitionSmooth.png -- 234.06kb -> 172.67kb (26.23%)
/resources/optimisation/mbc2.png -- 43.86kb -> 34.41kb (21.55%)
/resources/optimisation/mbe2.png -- 36.54kb -> 29.20kb (20.11%)
/resources/geometry_processing/shapeIntersection.gif -- 545.64kb -> 445.16kb (18.42%)
/resources/examples/intersectionBoids.png -- 278.73kb -> 231.02kb (17.12%)
/resources/optimisation/mir2.png -- 23.40kb -> 19.63kb (16.1%)
/resources/morphology/buffer.gif -- 1,561.39kb -> 1,312.36kb (15.95%)
/resources/optimisation/mir1.png -- 22.81kb -> 19.57kb (14.18%)
/resources/examples/minkShearLetters.png -- 69.05kb -> 61.14kb (11.45%)
/resources/optimisation/mbe1.png -- 39.81kb -> 36.71kb (7.77%)
/resources/pgs/randomPolygon.gif -- 38.47kb -> 35.95kb (6.53%)
/resources/pgs/star.gif -- 187.12kb -> 176.99kb (5.42%)
/resources/pgs/supershape.gif -- 64.12kb -> 61.82kb (3.58%)
/resources/transform/shear.gif -- 907.24kb -> 878.34kb (3.18%)
/resources/transform/resize.gif -- 804.79kb -> 784.97kb (2.46%)
/resources/boolean/union.gif -- 233.12kb -> 233.11kb (0%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp