fixed
the html-has-lang iframe-has-title errors could also appear in situations where we can't discern the base tag (e.g.,
styled(CustomComponent)`` where CustomComponent is defined in a separate file).
fixed
bug with combined component objects (such as animated.div) which would end up causin html-has-lang and
iframe-has-title errors to show where they shouldn't have.
added extends plugin:jsx-a11y to index configuration now that airbnb config is removed, fixing issue with missing
rules from react-ally/aribnb config as mentioned here.