Version of SWIFT from April 2025. Major changes since v2025.01: - Updated neighbour finding performing operations at different level in the tree to speed up operations in deep hierarchies with steep density gradients (backport from COLIBRE fork) - REMIX-SPH included as a hydrodynamics scheme. - Added more equations of state for planetary applications. - Added an interface to Lustre such that the code can stripe files cleverly based on the properties of the filesystem it runs on. - Many small bug fixes This version is nearly identical to the base version used for the large COLIBRE production runs. - Many updates to the GEAR model.