Add style lint rule to detect duplicated symbols
From !724 (diffs, comment 215097814):
It is fairly common to add duplicated mixins to the utility-mixin file. We need to create or add an existing style-lint rule to detect duplicated mixins.
From !724 (diffs, comment 215097814):
It is fairly common to add duplicated mixins to the utility-mixin file. We need to create or add an existing style-lint rule to detect duplicated mixins.