Removes hardcoded username field in favor of User.USERNAME_FIELD and adds the ability to customize the user search field used in the admin for Membership
Allows customization of a staffuser that is considered an implicit manager of all teams on a site
usernamefield in favor ofUser.USERNAME_FIELDand adds the ability to customize the user search field used in the admin forMembershipstaffuser that is considered an implicit manager of all teams on a site