Note worthy changes

• When only allauth.account was installed, you could run into an exception stating "allauth.socialaccount not installed, yet its models are imported.". This has been fixed.
• When SOCIALACCOUNT_EMAIL_AUTHENTICATION was turned on, and a user would connect a third-party account for which email authentication would kick in, the connect was implicitly skipped. Fixed.
• The recommendation from the documentation to protect the Django admin login could cause an infinite redirect loop in case of AUTHENTICATED_LOGIN_REDIRECTS. A decorator secure_admin_login() is now offered out of the box to ensure that the Django admin is properly secured by allauth (e.g. rate limits, 2FA).
• Subpackages from the tests package were packaged, fixed.