0.1.0

• Initial release
• Registers gatherpress_group as a public, hierarchical, block-editor-enabled post type with archive and configurable permalink base
• Declares gatherpress-venue-information post type support, giving Group posts venue-style fields instead of an event date
• Declares gatherpress-relations-from post type support, enabling GatherPress Relations to wire junction meta and source shadow taxonomies (e.g. _gatherpress_person) onto Group posts
• Registers shadow taxonomy _gatherpress_group on gatherpress_event and gatherpress_play, linking events and productions to the group they belong to
• Exposes the shadow taxonomy in the block editor metabox and quick-edit panel
• Registers a gatherpress/venue block variation scoped to gatherpress_group, with linked post title and linked featured image as default inner blocks
• Adds a Theater > Permalinks settings section under the GatherPress admin screen with a configurable URL base for the Groups archive
• Registers a gatherpress-groups/starter block pattern scoped to the Group post type