Configuration updated for convenience. No-impact on map.

Terrascaping 2.0 for better balance and aesthetics:
1. Use radial variance fractal for ice shelf, terrain and feature generation.
2. Reduce tundra % for realism (and to prevent Canada from being too OP on this map).

1. Bugfix for ice shelf generation. Trivial. No impact on (land) map.

1. GS Climate system support.
2. Fix compatibility for current version of Civ VI (Dec 2020).

1. No reefs!
2. Bugfix: random World Age.

1. Add support for R&F.
2. Hookup advanced map settings World Age & Rainfall.

Removing natural wonders (like Uluru) in both XML and the map script to avoid Dead Sea bug.

Fix for "Dead Sea" bug: units would heal completely after 1 turn; naval units as well.

Tweaked ice gen logic to be densest/tightest around "neck" of continent.

1. Using start defaults from Fractal map; resource defaults from Island Plates.
2. Copied Arctic map ice shelf logic. It's not possible to circumnavigate continent along the coast anymore.