v2.43:

Added 1.2 tags

v2.42:

Increased path cost of Solidifying lava so pawns don't constantly path through it and burn to death

v2.41:

Added biome specific buildings to other biome, the Tar Pits. All these buildings are found in the Alpha Biomes architect tab:
New resource, Cordax Resin, acquired from Keening Cordax plants. These no longer produce wood, so the amount of wood in Fan Palms has been increased to compensate.
New building: Tar Pits Exotic Smelter, to convert the resin to processed resin
New building: Tar Pump. Can be built on tarred mud (with a penalty) or directly on a tar hole. It produces chemfuel and asphalt.
New floors: asphalt can be used to build tarmac and asphalt bridges, which can be built to increase movement speed on this biome
New security options: asphalt can be used to build tar shells and tar IEDs, which create tar puddles that decrease movement speed to 6%. This tar destroys many floors, and if it rains... it will harden and not go away.

v2.4:

Added a new biome, the Pyroclastic Conflagration
Added compatibility with Alpha Animals to spawn the new 4 creatures in this biome. All of them only appear in this biome
Added two new weathers: volcanic ash and volcanic ash rain, and a new game condition, acid rain, that should only appear in the new biome
Fixed bug where tar puddles were turning into burned tree trunks when struck by lightning

v2.306:

Added Empire compatibility patch

v2.305:

Increased Nutrition of Crystal Flowers in the Propane Lakes biome, since they are now trees and if Thrumbos try to feed on them they get hungry faster than they can eat the flower

v2.304:

Adjusted core sample drill to be 2x the speed of the vanilla drill (was 10x)
Fixed a nasty bug where reloading the map on a vanilla biome with the core sample drill would mess up graphic generation on the map (you may get an error on next loading of the map, and the previously placed drill may disappear. Just ignore the error and keep on. You can use dev mod to spawn a new drill to avoid losing the materials)

v2.303:

Added the Core Sample Drill, a buildings that allows you to mine the 5 vanilla rock types from any biome. It requires Deep Drilling and Advanced Fabrication, and its cost is quite high. This is provided to be able to finish some Monument Quests which ask for vanilla rock types in biomes that just don't have them.
Added Doors Expanded compatibility

v2.302:

Removed Pyroclastic Conflagration biome from generating, it was left over from testing

v2.301:

Bumbledrone hives now periodically produce Bumbledrone Jelly, since poor Bumbledrones weren't consuming insect jelly and starving
Changed terrain affordability in the ocular forest, since fertile and non-fertile terrains had affordability swapped