v21.0.0

Features

• assets: (breaking) Update @mozilla-protocol/assets to 6.0.1
• css: Update navigation and footer with Mozilla logo lockup.

Bug Fixes

• css: Notification bar padding of links only working for complete sentences (#1000)
• css: Missing explicit mzp-c-notification-bar-cta distinction (#1041)
• css: Fix logo size in navigation in Firefox variant on large screen

Migration Tips

• The new Mozilla wordmark files are the same height but longer. If you are explicitly declaring a width for them, you should update it (Tip: check your CSS background images too.)
• The flat logo files are no longer square, so check their dimensions too (social files remain square)