v1.0.0-alpha.5

Ultimaker designs uses several weights besides 'normal', that do
not nicely correspond with named weights in CSS. To keep CSS consistent
we will enforce numeric weight notation.

// good
.foo {
    font-weight: 400;
}

// good, "default" bold that Ultimaker designs use
.foo {
    font-weight: 500;
}

// bad, because inconsistent
.bar {
    font-weight: normal;
}

// worse, bold corresponds with a font weight of 700 that we do not have
.bar {
    font-weight: bold;
}