Fix hyp_evolve.yaml indexing bug (#6604)

* Fix `hyp_evolve.yaml` indexing bug

Bug caused hyp_evolve.yaml to display latest generation result rather than best generation result.

* Update plots.py

* Update general.py

* Update general.py

* Update general.py

utils/plots.py

@@ -381,6 +381,7 @@ def plot_evolve(evolve_csv='path/to/evolve.csv'):  # from utils.plots import *;
     j = np.argmax(f)  # max fitness index
     plt.figure(figsize=(10, 12), tight_layout=True)
     matplotlib.rc('font', **{'size': 8})
+    print(f'Best results from row {j} of {evolve_csv}:')
     for i, k in enumerate(keys[7:]):
         v = x[:, 7 + i]
         mu = v[j]  # best single result