The reb_max_messages_... should not be in ASSIST as they are already part of REBOUND.
ASSIST now sets ri_ias15.adaptive_mode=1 by default so that it used the "old" time stepping algorithm. This way the unit tests are passing without change. In principle, it would be nice to use the new adaptive mode, but it would require us to change the unit tests a little. Either relaxing the criteria for what a good match is, or by decreasing IAS15's epsilon value a little to increase the precision.
I've commented out the old GR function. It was a static function and some compilers generate a warning if a static function is never used.
reb_max_messages_...should not be in ASSIST as they are already part of REBOUND.ri_ias15.adaptive_mode=1by default so that it used the "old" time stepping algorithm. This way the unit tests are passing without change. In principle, it would be nice to use the new adaptive mode, but it would require us to change the unit tests a little. Either relaxing the criteria for what a good match is, or by decreasing IAS15's epsilon value a little to increase the precision.