Added the possibility to tune the number of NonConverging ionic steps in the NonConvergingErrorHandler
Added the possibility to tune the number of NonConverging ionic steps in the NonConvergingErrorHandler

materialsproject/custodian,materialsproject/custodian,specter119/custodian,alberthxf/custodian,specter119/custodian,specter119/custodian,davidwaroquiers/custodian,xhqu1981/custodian,materialsproject/custodian