Allow humidity to vary depending on the season in tropical biomes. For example, humidity should be more punishing during the wet season, and less punishing during the dry season.
Checklist:
[x] Make sweating efficiency responsive to tropical seasons in humid biomes
[x] If no tropical season is given for a biome, it should fallback to the default
[x] The default should be 1/3 not 1/6
[x] Add wet season humid biome efficiency to config
[x] Add dry season humid biome efficiency to config
Feature description
Allow humidity to vary depending on the season in tropical biomes. For example, humidity should be more punishing during the wet season, and less punishing during the dry season.
Checklist: