Patch Notes: Lighter ships in port

Performance

• Towns with ships in port run smoother online. In our measurement the ships cost about a quarter of their old share of each frame, and they leave far less garbage behind, so there are fewer stutters.

What's Changed

• PERF-SAILS3 + PERF-SAILS4: the ships' frame - a boat's plan, a still clip posed once, a rope's bones off the walk (#901, by @joaomdb3) by @Lattymoy in #941
• PERF-SAILS3 + PERF-SAILS4: the ships' frame - a boat's plan, a still clip posed once, a rope's bones off the walk by @joaomdb3 in #901

Full Changelog: app-v0.1.8884...app-v0.1.8893