W&B log epoch (#1946)

* W&B log epoch

* capitalize

* W&B log epoch

* capitalize

* Update train.py

New try using https://docs.wandb.ai/library/log#incremental-logging

* Update train.py

* Update test.py

* Update train.py

* Update plots.py

* Update train.py

* Update train.py

* label plot step -1

* update

* update

* update

* update

* update

* update

* Update train.py

* Update train.py

train.py

@@ -321,7 +321,7 @@ def train(hyp, opt, device, tb_writer=None, wandb=None):
                     #     tb_writer.add_graph(model, imgs)  # add model to tensorboard
                 elif plots and ni == 10 and wandb:
                     wandb.log({"Mosaics": [wandb.Image(str(x), caption=x.name) for x in save_dir.glob('train*.jpg')
-                                           if x.exists()]})
+                                           if x.exists()]}, commit=False)
 
             # end batch ------------------------------------------------------------------------------------------------
         # end epoch ----------------------------------------------------------------------------------------------------