Updated for Stellaris v2.8.

Version matching with core mod.

Added a planet decision for constructing a Biovault on a hostile habitable that doesn't have one.
Added scaled terraforming (cost and time by size) of molten, frozen or toxic planetoids into habitables, available to those with the appropriate origins.

Changed relevant techs to unlock the ability to terraform.
Added terraforming links allowing cheap and fast terraforming of most normal habitable worlds into hostile habitables.