Exclude dead browsers from browserlist

[petterw03]

What problem does this feature solve?

With the current browserlist configuration (> 1%, last 2 versions), the apps are supporting dead browsers like IE 10 and will keep doing that for ever after, since IE10 and IE11 will always be the last two versions of Internet Explorer.

What does the proposed API look like?

By adding the line not dead to the .browserlistrc, we can rule out IE 10, and in the future when IE 11 usage drops below 0.5%, it will be gone as well.

[haoqunjiang]

Good catch 👍