Reset history plots for each new call of vector_fit().
Reset history plots for each new call of vector_fit().

scikit-rf/scikit-rf,temmeand/scikit-rf,jhillairet/scikit-rf,scikit-rf/scikit-rf,jhillairet/scikit-rf,temmeand/scikit-rf,jhillairet/scikit-rf,temmeand/scikit-rf