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.
WOOF_Inflector :: underscore( String $word )
Convert any “CamelCased” or “ordinary Word” into an “underscored_word”. This can be really useful for creating friendly URLs.