fixed a bug where particles were cleared but deleted neighbors were
pushed to affected particles and not cleared afterwards.
added accuallrate test, fixed a bug where ktot was not reset properly.
Still bugs from reactionchoise test.
fixed the bug in the test.. return didnt stop the loop from proceeding,
as I thought in my hastiness... all reaction tests pass.
bugfix. periodic boundary tests pass. Edge+ crashes. Will look into it
later.
updated ignis