Add detection of `href="javascript:void 0"` to todo.
Add detection of `href="javascript:void 0"` to todo.

HossainKhademian/HtmlMinifier,GerHobbelt/html-minifier,bryanerayner/html-minifier,GerHobbelt/html-minifier,DChristiany/html-minifier,psychoss/html-minifier,DChristiany/html-minifier,MacManus/html-minifier,kangax/html-minifier,jonnochoo/html-minifier,AshKyd/html-minifier,psychoss/html-minifier,kangax/html-minifier,kangax/html-lint,jonnochoo/html-minifier,bryanerayner/html-minifier,kangax/html-lint,AshKyd/html-minifier,MacManus/html-minifier