add masterclasses high endpoint; ability to pull in high importance commercial component
routes fromatting
Styling for supporting and showcase elements
add data-component; better indentation
Merge pull request #4121 from guardian/commercial-force-high-relevance

Commercial: Masterclasses high relevance component
All video embeds require responsive ratio class
more specific, only find inline ads
Merge pull request #4130 from guardian/facia-tool-tag-or-section-name

Facia tool configuration to show tags or sections name
Remove rem mixin spacing
Merge pull request #4136 from guardian/layout-hints

Layout hints for body embeds
wrapping show tag support in a switch 'facia-tool-tags'