I notice that in Font Awesome there are version parameters in the CSS file and speed testing tools recommend to remove them from static resources:
@font-face {
font-family: 'FontAwesome';
src: url("/vendor/font-awesome/fonts/fontawesome-webfont.eot?v=4.6.3");
src: url("/vendor/font-awesome/fonts/fontawesome-webfont.eot?#iefix&v=4.6.3")...
....
}
What is the function of those parameters? Is it safe to remove everything after (and including) the ?
or is there really any reason to keep those parameters?