slipway a4b

My entry to the Payload Checklist Contest. A single-stage payload map set in a harbour. Contains a number of dynamic elements and hazards including:
- Moving shipping containers that enable new routes, potentially helping a well-timed push.
- A Hightower-style payload elevator finale, courtesy of Blade x64's prefab.
- A grinder, for grinding careless players.

Thanks to:
ABS's Ultimate Mapping Resource Pack:
https://tf2maps.net/threads/ultimate-mapping-resource-pack.4674/
Blade x64's Payload Elevator Logic:
https://tf2maps.net/threads/payload-elevator-logic.38085/