v3.3

MINOR release.

This release enacts the 2026-07-16 decision of the Standing Technical Committee to approve the following proposals for inclusion into the Specification:

• Deprecate service.schedules in favour of service.operating_hours and service.events
• Schedule Groups

What's Changed

• Feature: Schedule Groups and Events by @mrshll1001 in #594

Full Changelog: v3.2.3...v3.3