Markus Holzer authored 4 years ago and Dominik Thoennes committed 4 years ago

also clean up some old leftovers nearby

- checking order of integrator
- checking energy conservation
- added semi implicit euler
- improved documentation
- playground for integrator analysis

It is not needed because deprecations are compiler warnings and should not be ignored anyway.
Also, no need to export WARNING_DEPRECATED to the C++ code.

Our own wrappers was only used in one place anyway and did not all allow for specify a reason string.

DistanceComputations.h uses logging macros but does not include the
header unconditionally.

nrOfGhostLayers_ is unsigned while all cell_idx_t calculations are
signed.

If a process started by mpiexec finishes too quickly, sometimes some of the other processes are not started.
It is unclear whether this is an OpenMPI or macOS bug, but appears significantly more often since moving from macOS 10.13 to 10.15. OpenMPI 4.0.1 and 3.0.0 both show the issue on macOS 10.15.

The two-argument version was removed late in the standardization process

If load balancing changes the neighborhood, caching of receive
buffers can lead to dead locks.