Trying to print bytes instead of a string in cgetline()

After choosing a 'regular' game, I get the following error:

>    File "./sst.py", line 3267, in cgetline
>       line = curwnd.getstr() + "\n"
> TypeError: can't concat str to bytes

Suggest changing line 3267 from
```
line = curwnd.getstr() + "\n"
```
to 
```
line = curwnd.getstr().decode('utf-8') + "\n"
```