Update dependencies to allow PHP 8.3.
Fixes bug when adding recipient during reply form.
Fix for access check to allow access for unsubscribed recipients.
Adds recipient management.
Remove maxlen on recipient input, adjust access to threads via UUID/token.
Trim sender and recipient values, handle invalid recipients in thread create handler.
fixes for email recipient
Misc fixes.
Removed 1-to-1 thread type to webform handling.
Fixes numerous bugs.
Initial functionality.
Dev release.
