Masterpress 1.3.6 is a compatibility release. It resolves an edge case with shared fieldsets not working for MySQL 8 when the fieldset is limited to more than 1 post type or taxonomy or excluding any post types or taxonomies.
The UI and API implementation for the generic File Upload field type.
This field type stores the following field properties alongside the standard value:
The original source URL for the file, if it was downloaded from a URL.
The post ID for the attachment this file is related to, if it was created “From media library”.