Does 0.2.x download new model and old one can be deleted?

Just upgraded from 0.1 to 0.2.1, in my ~/.diffusionbee/downloads I see..

```
root@Davids-MBP downloads # ls -alrt
total 17063136
-rw-r--r-- 1 davidfox staff 4265380512 12 Sep 17:50 sd-v1-4.ckpt
-rw-r--r-- 1 davidfox staff 341284588 12 Sep 17:52 clip_transformer.zip
drwxr-xr-x 4 davidfox staff 128 12 Sep 18:37 ..
-rw-r--r--@ 1 davidfox staff 6148 12 Sep 18:37 .DS_Store
drwxr-xr-x 4 davidfox staff 128 12 Sep 21:47 clip_transformer
-rw-r--r-- 1 davidfox staff 3439035312 23 Sep 11:36 diffusion_model.h5
-rw-r--r-- 1 davidfox staff 492456896 23 Sep 11:37 text_encoder.h5
drwxr-xr-x 9 davidfox staff 288 23 Sep 11:37 .
-rw-r--r-- 1 davidfox staff 198152112 23 Sep 11:37 decoder.h5
```

I wonder if diffusion_model.h5 replaces sd-v1-4.ckpt and the latter can be deleted?

Thanks!