Pass the correct units to VR. Pass more cosmology info to VR. Only update the particle fields if running VR at a snapshot dump time.

Pass the correct units to VR. Pass more cosmology info to VR. Only update the particle fields if running VR at a snapshot dump time.

Delayed foreign allocation

Closes #456

See merge request !716

Better link size estimates

Closes #521

See merge request !712

Do not count the particles in the leaves when looking for the number of foreign particles to allocate.

New ghost iteration scheme

See merge request !714

Add a flag to force a STF output after every snapshot. The files then use a differen naming convention.