v1.3.9
Release 1.3.9: skip body compilation on lightweight provider calls. When get_serialized_data(attachments=False) is used for retrieve, cancel, delete, and billing, body processors and first_document generation are no longer triggered. Also uppercase Maileva postage_type, add a test sleep_processor hook for timeout debugging, and allow null body_text. Co-authored-by: Cursor <cursoragent@cursor.com>