Minify option true, remove css svg properties

[arieffikhrie]

Setting up minify option to true removing svg properties cx, cy, r.

I think this behaviour coming from clean-css@v4 package

var CleanCSS = require('clean-css');
var input = `
  .test {
    cx: 0.5em;
    cy: 0.5em;
    fill: none;
    r: 0.2em;
  }
`;
var options = { /* options */ };
var output = new CleanCSS(options).minify(input);

console.log(output.styles);

By changing it to clean-css version 5, should fix this issue