These warnings were annoying me because the noise makes it easy to miss real issues.
The `no-mergeable-selectors` rule is one that we do want to have, but right now it asks that you merge selectors in different `@media` blocks. When the next release happens we should put that back.
https://github.com/sasstools/sass-lint/issues/307
Similarly, we want `force-element-nesting` but there is a problem with that because there's no easy way to have a nested selector in a list of selectors.
https://github.com/sasstools/sass-lint/issues/575
Finally, until they implement per-line overrides, we have to silence `class-name-format` because we don't have control over the ReactModal class names. It's a useful rule to keep class names consistent though. Per-line ignores should be coming soon: https://github.com/sasstools/sass-lint/issues/70
