Adding Gonzalez term to DG
The gonzalez term was not in the discrete gradients code when it was originally merged. I added it back in to tsdiscgrad and added some tests to swarm/ex4. DG should work properly and be conservative now.
The gonzalez term was not in the discrete gradients code when it was originally merged. I added it back in to tsdiscgrad and added some tests to swarm/ex4. DG should work properly and be conservative now.