Updates for climate change (CO2 levels for custom map sizes).

Custom map sizes: Huge and Massive (Alpha/experimental).

Use Terra script start location params (so civilizations don't spawn on too small islands).

Bump version number and remove (red) warnings.

Pruned map to 128*80, the largest currently playable map size in Civ VI.

Reduced reef to 20%

None - code cleanup.

Pruned the map size to 199x100 (possibly temporarily until larger map sizes are supported by Civ VI).

1. Added GS map (though untested cos of lack of support for such large maps post GS).

Optional Support for Great Barrier Reef mod.