Backup diff of 2017-11-10 vs current(No. 1)

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https://twitter.com/yoya/status/902170344428945409

% brew install imagemagick@6 --with-fontconfig --with-ghostscript --with-hdri --with-librsvg --with-little-cms --with-openexr --with-openjpeg

% brew install imagemagick --with-fontconfig --with-ghostscript --with-hdri --with-librsvg --with-little-cms --with-openexr --with-openjpeg