10.22.0

Features

• Support MathML namespace (#4364, thanks @rschristian)

Types

• Add popover types (#4378, thanks @rschristian)

Maintenance

• Skip running compressed-size builds twice (#4377, thanks @rschristian)
• Test types and warnings (#4369, thanks @rschristian)
• Bump compressed-size-action (#4368, thanks @rschristian)

Fixes

• Allow the same component to render many times across different phases (#4382, thanks @JoviDeCroock)
• Provide error for illegal nesting of <button> and <a> (#4376, thanks @rschristian)
• Disallow <tr> as a child of <table> (#4375, thanks @rschristian)
• Change syntax in compat/client for IE11 support (#4372, thanks @rschristian)