v2.7.2

What's Changed

• Fix arrivals-and-departures returning bare "null" on unresolvable route refs by @aaronbrethorst in #462
• Speed up gtfs-rt integration tests: cache bundle builds + parallel forks by @aaronbrethorst in #463
• adds a doc explaining how complex multi-agency setups work in OBA by @aaronbrethorst in #471
• Perf investigation: GTFS-RT matching CPU harness + findings by @aaronbrethorst in #472
• Review multi-agency bundle spec against source; fix inaccuracies by @aaronbrethorst in #476
• Stop GTFS-RT alerts refreshes from stalling arrivals and trip requests by @aaronbrethorst in #481
• Save service alerts before caching them by @aaronbrethorst in #483
• Check the API-key cache before opening a transaction (#482) by @aaronbrethorst in #485

Full Changelog: v2.7.1...v2.7.2