<===> input.scss
foo {
  bar: baz;
  bang: {
    bip: 1px;
    bop: bar;
    blat:{baf:bort}}}

<===> output.css
foo {
  bar: baz;
  bang-bip: 1px;
  bang-bop: bar;
  bang-blat-baf: bort;
}