[ImgBot] Optimize images (#58)

*Total -- 228.58kb -> 184.96kb (19.08%)

/images/vue2-simplert-logo+icon.png -- 22.40kb -> 14.50kb (35.28%)
/images/vue2-simplert-logo.png -- 11.61kb -> 8.07kb (30.48%)
/favicon/apple-icon.png -- 14.83kb -> 11.41kb (23.09%)
/favicon/apple-icon-precomposed.png -- 14.83kb -> 11.41kb (23.09%)
/favicon/android-icon-192x192.png -- 14.35kb -> 11.11kb (22.57%)
/favicon/apple-icon-114x114.png -- 7.39kb -> 6.08kb (17.72%)
/favicon/android-icon-96x96.png -- 5.96kb -> 4.93kb (17.38%)
/favicon/favicon-96x96.png -- 5.96kb -> 4.93kb (17.38%)
/favicon/ms-icon-150x150.png -- 10.63kb -> 8.80kb (17.2%)
/favicon/ms-icon-144x144.png -- 9.98kb -> 8.28kb (17%)
/favicon/android-icon-144x144.png -- 9.98kb -> 8.28kb (17%)
/favicon/apple-icon-144x144.png -- 9.98kb -> 8.28kb (17%)
/favicon/apple-icon-76x76.png -- 4.55kb -> 3.78kb (16.95%)
/favicon/android-icon-72x72.png -- 4.20kb -> 3.49kb (16.92%)
/favicon/apple-icon-72x72.png -- 4.20kb -> 3.49kb (16.92%)
/favicon/apple-icon-120x120.png -- 7.79kb -> 6.49kb (16.73%)
/favicon/apple-icon-152x152.png -- 10.80kb -> 9.02kb (16.53%)
/favicon/ms-icon-70x70.png -- 4.05kb -> 3.39kb (16.17%)
/favicon/apple-icon-60x60.png -- 3.37kb -> 2.86kb (15.26%)
/favicon/apple-icon-180x180.png -- 14.16kb -> 12.03kb (15.04%)
/favicon/apple-icon-57x57.png -- 3.20kb -> 2.74kb (14.35%)
/favicon/android-icon-48x48.png -- 2.70kb -> 2.36kb (12.86%)
/favicon/ms-icon-310x310.png -- 31.65kb -> 29.25kb (7.59%)

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