Matthieu Schaller authored Jul 17, 2019 and Matthieu Schaller committed Jul 17, 2019

Fixes a bunch of warnings in some calls to sprintf() taht trigger (false-positives?) warnings with GCC 9.1.0

Added basic support for black hole particles. Particles can be read in, attached to gpart, integrated forward in time, drifted and written to snapshots.

When running with VELOCIraptor, collect the DM particle in group for i/o alongside the regular gpart data.

If the snapshot units and internal units differ, re-scale the cell centres and widths to match the particle data unit system.

Write the centre of each cell, its particle count and global offset to the snapshots. Works without MPI.

Code formatting

Currently ParMETIS is used exclusively when it is available, it is not an error to configure with both METIS and ParMETIS

Change the behaviour in the absence of unit system defined in the IC file. We do not default to CGS any more, but us the internal units instead.