Timbral_Warmth.py:217: RuntimeWarning: divide by zero encountered in log10

The error occurs when there is a zero in the array : 
```python
spec[WR_upper_f_limit_idx:]
```
a working fix is replacing the line 217 with : 
```python
 above_WR_spec = [value if value == 0 else np.log10(value) for value in spec[WR_upper_f_limit_idx:]]
```