Core: minor change to n_iterations_log. If set to zero or less, it now once more means that no steps will be made inbetween start and finish. Also set minimum number of iterations to 1.
Core: minor change to n_iterations_log.
If set to zero or less, it now once more means that no steps will be made inbetween start and finish.
Also set minimum number of iterations to 1.

spirit-code/spirit,spirit-code/spirit,spirit-code/spirit,spirit-code/spirit,spirit-code/spirit,spirit-code/spirit