v4.0.0-beta.6

Changed

• Update managers #883 (frederikprijck)
• Handle duplicate user sign up #886 (frederikprijck)

Added

• Support Organization Name #885 (frederikprijck)
• Add support for userinfo endpoint #872 (frederikprijck)
• Support custom parameters with Authorization Code and Refresh Token Grants #889 (frederikprijck)