Use the correct unit conversion factor for the maximal temperature times in the non-cosmological EAGLE tracers.

Sf crash if no star

See merge request !1030

Give a sensible DM softening also for runs without DM

Closes #656

See merge request !1031

Updated the internal units of all the main boxes to reflect the internal constants assumed by the code.

Prevent black holes from swallowing gas before the stars in the same cell have converged on their smoothing lengths.

New BH merger scheme

See merge request swift/swiftsim!1027

Free unnecessary proxy memory

See merge request swift/swiftsim!1026

Logger mpi

See merge request !970

Revert "Change the EAGLE ICs' CFL condition to 0.2. Set the Mg SNII yields back to 2x. Set the SNIa rates back to an exponential as in original EAGLE."

This reverts commit 9f6a089e.

This reverts commit 780d9582.

This reverts commit 2f5bb817.