Note worthy changes

• New providers: TikTok, Lichess.
• Starting since version 0.62.0, new email addresses are always stored as lower case. In this version, we take the final step and also convert existing data to lower case, alter the database indices and perform lookups accordingly. Migrations are in place. For rationale, see the note about email case sensitivity in the documentation.
• An official API for single-page and mobile application support is now available, via the new allauth.headless app.
• Added support for a honeypot field on the signup form. Real users do not see the field and therefore leave it empty. When bots do fill out the field account creation is silently skipped.