Dataset BnL Historical Newspapers does not work in streaming mode
I see this is fixed now 🙂.  I also picked up a few other tips from your redactors so hopefully my next attempts will support streaming from the start. 
## Describe the bug
When trying to load in streaming mode, it "hangs"...

## Steps to reproduce the bug
```python
ds = load_dataset("bnl_newspapers", split="train", streaming=True)
```

## Expected results
The code should be optimized, so that it works fast in streaming mode.

CC: @davanstrien 

Dataset BnL Historical Newspapers does not work in streaming mode 
 ## Describe the bug
When trying to load in streaming mode, it "hangs"...

## Steps to reproduce the bug
```python
ds = load_dataset("bnl_newspapers", split="train", streaming=True)
```

## Expected results
The code should be optimized, so that it works fast in streaming mode.

CC: @davanstrien 
 
 I see this is fixed now 🙂.  I also picked up a few other tips from your redactors so hopefully my next attempts will support streaming from the start. 